January
January 7: The Pisa tower closed.
January 1
Poland becomes the first country in Eastern Europe to begin abolishing its state socialist economy. Poland also withdraws from the Warsaw Pact.
Glasgow begins its year as European Capital of Culture.
Rowan Atkinson's Mr. Bean debuts in a Thames Television special.
January 3 – United States invasion of Panama: General Manuel Noriega, the deposed "strongman of Panama", surrenders to American forces.
January 4 – Two trains collide in Sangi, Pakistan, killing between 200 and 300 people and injuring an estimated 700 others.
January 7 – The Leaning Tower of Pisa is closed to the public because of safety concerns.
January 9 – Ugandan Lt. Gen. Bazilio Olara-Okello, who led a coup against Dr. Apolo Milton Obote's government, dies in Ormduruman Hospital in Khartoum, Sudan.
January 11 – Cold War: In Lithuania, 300,000 demonstrate for independence.
January 15
The National Assembly of Bulgaria votes to end one party rule by the Bulgarian Communist Party.
Thousands storm the Stasi headquarters in East Berlin in an attempt to view their government records.
Martin Luther King Day Crash – Telephone service in Atlanta, St. Louis, and Detroit, including 9-1-1 service, goes down for nine hours, due to an AT&T software bug.
January 20
Cold War: Soviet troops occupy Baku, Azerbaijan, under the state of emergency decree issued by Soviet premier Mikhail Gorbachev, and kill over 130 and wound over 700 protesters for national independence.[8]
Clashes break out between Indian troops and Muslim separatists in Kashmir.
The government of Haiti declares a state of siege, under which it suspends civil liberties, imposes censorship, and arrests political opponents. The state of siege is lifted on January 29.
January 22
The League of Communists of Yugoslavia votes to give up its monopoly on power.
Robert Tappan Morris, Jr. is convicted of releasing the Morris worm.
January 25
Avianca Flight 52 crashes into Cove Neck, Long Island, New York after a miscommunication between the flight crew and JFK Airport officials, killing 73 people on board.
Prime Minister of Pakistan Benazir Bhutto gives birth to a girl, becoming the first modern head of government to bear a child while in office.
Pope John Paul II begins an eight-day tour of Cape Verde, Guinea-Bissau, Mali, Burkina Faso, and Chad.
January 25–26 – The Burns' Day storm kills 97 in northwestern Europe.
January 27 – The city of Tiraspol in the Moldavian SSR briefly declares independence.
January 28 – Four months after their exit from power, the Polish United Workers' Party votes to dissolve itself and reorganize itself as the Social Democracy of the Republic of Poland.[9]
January 29
The trial of Joseph Hazelwood, former skipper of the Exxon Valdez, begins in Anchorage, Alaska. He is accused of negligence that resulted in America's second worst oil spill to date.
In Holmdel, New Jersey, scientists at Bell Labs announce they have created a digital optical processor that could lead to the development of superfast computers that use pulses of light rather than electric currents to make calculations.
January 31
Globalization – The first McDonald's in Moscow, Russia opens 8 months after construction began on 3 May 1989. 8 months later the first McDonald's in Mainland China is opened in Shenzhen.[10]
War on Terror – Liberal Muslim Rashad Khalifa is murdered in Tucson, Arizona; his killer is theorized to be a member of an early al-Qaeda sleeper cell.[4]
President of the United States George H. W. Bush gives his first State of the Union address and proposes that the U.S. and the Soviet Union make deep cuts to their military forces in Europe.
January 29: Trial relating to Exxon Valdez.
February
Smoking is banned on all cross-country flights in the United States. [11]
February 2 – Apartheid in South Africa: F. W. de Klerk announces the unbanning of the African National Congress and promises to release Nelson Mandela.
February 7
The Communist Party of the Soviet Union votes to end its monopoly of power, clearing the way for multiparty elections.
In the Tajik Soviet Socialist Republic, rioting breaks out against the settlement of Armenian refugees there.
February 10
President of South Africa F. W. de Klerk announces that Nelson Mandela will be released the next day.
Las Cruces Bowling Alley massacre: 2 people walked into the 10 Pin Alley in Las Cruces, New Mexico, (known then as the Las Cruces Bowl) and shot seven people, four of which were killed. The case is currently unsolved.
February 11 – Nelson Mandela is released from Victor Verster Prison, near Cape Town, South Africa, after 27 years behind bars.
February 12 – Representatives of NATO and the Warsaw Pact meet in Ottawa for an "Open Skies" conference. The conference results in agreements about superpower troop levels in Europe and on German reunification.
February 13
German reunification: An agreement is reached for a two-stage plan to reunite Germany.
Drexel Burnham Lambert files for bankruptcy protection, Chapter 11.
February 14 – The Pale Blue Dot photograph of Earth is sent back from the Voyager 1 probe after completing its primary mission, from around 3.5 billion miles away.
February 15
The United Kingdom and Argentina restore diplomatic relations after 8 years. The UK had severed ties in response to Argentina's invasion of the Falkland Islands, a British Dependent Territory, in 1982.
In Cartagena, Colombia, a summit is held between President of the United States George H. W. Bush, President of Bolivia Jaime Paz Zamora, President of Colombia Virgilio Barco Vargas, and President of Peru Alan García. The leaders pledge additional cooperation in fighting international drug trafficking.
February 24 – The Lithuanian Soviet Socialist Republic holds the first democratic election in the history of the Soviet Union.
February 26
The Sandinistas are defeated in the Nicaraguan elections, with Violeta Chamorro elected as the new president of Nicaragua, replacing Daniel Ortega.
The USSR agrees to withdraw all 73,500 troops from Czechoslovakia by July, 1991.
February 27 – Exxon Valdez oil spill: Exxon and its shipping company are indicted on 5 criminal counts.
February 28 – President of Nicaragua Daniel Ortega announces a cease-fire with the U.S.-backed contras.
March
March 1
A fire at the Sheraton Hotel in Cairo, Egypt, kills 16 people.
Steve Jackson Games is raided by the U.S. Secret Service, prompting the later formation of the Electronic Frontier Foundation.
The Royal New Zealand Navy discontinues its daily rum ration.
Luis Alberto Lacalle, a grandson of the late politician and diplomat Luis Alberto de Herrera, is sworn in as President of Uruguay.
March 3 – The International Trans-Antarctic Scientific Expedition, a group of six explorer for six nations, completes the first dog sled crossing of Antarctica.
March 6 – An SR-71 sets a U.S. transcontinental speed record of 1 hour 8 minutes 17 seconds, on what is publicized as its last official flight.
March 9
Police seal off Brixton in South London after another night of protests against the poll tax.
Newfoundland Premier Clyde Wells confirms he will rescind Newfoundland's approval of the Meech Lake Accord.
March 10 – Eighteen months after seizing power in a coup, Prosper Avril is ousted in Haiti.
March 11 – Cold War: Lithuania declares independence from the Soviet Union with the Act of the Re-Establishment of the State of Lithuania.
March 12
Cold War: Soviet soldiers begin leaving Hungary under terms of an agreement to withdraw all Soviet troops by June 1.
Patricio Aylwin is sworn in as the first democratically elected Chilean president since 1970.
March 13 – The Supreme Soviet of the Soviet Union approves changes to the Constitution of the Soviet Union to create a strong U.S.-style presidency. Mikhail Gorbachev is elected to a five-year term as the first-ever President of the Soviet Union on March 15.
March 15
Iraq hangs British journalist Farzad Bazoft for spying. Daphne Parish, a British nurse, is sentenced to 15 years' imprisonment as an accomplice.
Mikhail Gorbachev is elected as the first executive president of the Soviet Union.
Cold War: The Soviet Union announces that Lithuania's declaration of independence is invalid.
Fernando Collor de Mello takes office as President of Brazil, Brazil's first democratically elected president since Jânio Quadros in 1961. The next day, he announces a currency freeze and freezes large bank accounts for 18 months.
March 18
Twelve paintings, collectively worth $100 to $300 million, are stolen from the Isabella Stewart Gardner Museum in Boston, Massachusetts by 2 thieves posing as police officers. This is the largest art theft in US history, and the paintings (as of 2011) have not been recovered.
Cold War: East Germany holds its first free elections.
March 20 – Ferdinand Marcos's widow, Imelda Marcos, goes on trial for bribery, embezzlement, and racketeering.
March 21 – After 75 years of South African rule since World War I, Namibia becomes independent.
March 24 – In the Australian federal election, the Australian Labor Party, led by Prime Minister of Australia Bob Hawke, clings to power with a reduced majority.
March 25
In New York City, a fire due to arson at an illegal social club called "Happy Land" kills 87.
Archbishop of Canterbury Robert Runcie announces his intention to retire at the end of the year.
In the Hungarian parliamentary election, Hungary's first multiparty election since 1948, the Hungarian Democratic Forum wins the most seats.
March 26 – The 62nd Academy Awards, hosted by Billy Crystal, are held at the Dorothy Chandler Pavilion in Los Angeles, California, with Driving Miss Daisy winning Best Picture.
March 27 – The United States begins broadcasting TV Martí to Cuba.
March 28 – U.S. President George H. W. Bush posthumously awards Jesse Owens the Congressional Gold Medal.
March 30 – Cold War: After its first free elections during the Soviet era on March 18, Estonia declares Soviet rule to have been illegal since 1940.
March 31 – "The Second Battle of Trafalgar": A massive anti-poll tax demonstration in Trafalgar Square, London, turns into a riot; 471 people are injured, and 341 are arrested.
April
April 1
The Community Charge (poll tax) takes effect in England and Wales amid widespread protests
Strangeways Prison riot: The longest prison riot in Britain's history begins at Strangeways Prison in Manchester, and continues for 3 weeks and 3 days, until April 25.
The Ultimate Warrior defeats Hulk Hogan to win the WWF Championship in a Title for Title, winner takes all match at WrestleMania VI in front of nearly 68,000 people at the SkyDome in Toronto, Ontario.
The 1990 United States Census begins. There are 248,709,873 residents in the U.S.
April 6 – Robert Mapplethorpe's "The Perfect Moment" show of nude and homoerotic photographs opens at the Cincinnati Contemporary Arts Center, in spite of accusations of indecency by Citizens for Community Values.
April 7
Iran–Contra affair: John Poindexter is found guilty of 5 charges for his part in the scandal; the convictions are later reversed on appeal.
Scandinavian Star, a Bahamas-registered ferry, catches fire en route from Norway to Denmark, leaving 158 dead.
April 8
In Nepal, Birendra of Nepal lifts a ban on political parties following violent protests.
In the Greek legislative election, the conservative New Democracy wins the most seats in the Hellenic Parliament; its leader, Konstantinos Mitsotakis, becomes Prime Minister of Greece on April 11.
In the Socialist Federal Republic of Yugoslavia, the Socialist Republic of Slovenia holds Yugoslavia's first multiparty election since 1938. After the election, a center-right coalition led by Lojze Peterle forms Yugoslavia's first non-Communist government since 1945.
April 9 – Comet Austin, the brightest comet visible from Earth since 1975, makes its closest approach to the sun.
April 12 – Lothar de Maizière becomes prime minister of East Germany, heading a conservative coalition that favors German reunification.
April 13 – Cold War: The Soviet Union apologizes for the Katyn massacre.
April 15 – Food poisoning kills 450 guests at an engagement party in Uttar Pradesh.
April 14 - Junk bond financier Michael Milken pleaded guilty to fraud-related charges. He agreed to pay US$500 million in restitution and was sentenced on November 21 to 10 years in jail.
April 22
Lebanon hostage crisis: Lebanese kidnappers release American educator Robert Polhill, who had been held hostage since January 1987.
Earth Day 20 is celebrated by millions worldwide.
April 24
Cold War: West Germany and East Germany agree to merge currency and economies on July 1.
STS-31: The Hubble Space Telescope is launched aboard Space Shuttle Discovery.[12]
President of Zaire Mobutu Sese Seko lifts a 20-year ban on opposition parties.
April 25 – Violeta Chamorro is elected President of Nicaragua.
April 30 – Lebanon hostage crisis: Lebanese kidnappers release American educator Frank H. Reed, who had been held hostage since September 1986.
May
May 1 – The former Episcopal Church in the Philippines (supervised by the Episcopal Church of the United States of America) is granted full autonomy and raised to the state of an Autocephalous Anglican province and renamed the Episcopal Church of the Philippines.
May 2 – In London, a man brandishing a knife robs a courier of bearer bonds worth £292 million (the second largest mugging to date).
May 2–4 – First talks between the government of South Africa and the African National Congress.
May 4 – Cold War: Latvia declares independence from the Soviet Union.
May 6–13 – Pope John Paul II visits Mexico.
May 8
Cold War: Estonia restores the formal name of the country, the Republic of Estonia, as well as the state emblems (the coat of arms, the flag and the anthem).
Rafael Ángel Calderón Fournier assumes office as President of Costa Rica.
May 9 – In South Korea, police battle anti-government protesters in Seoul and two other cities.
May 13 – In the Philippines, gunmen kill two United States Air Force airmen near Clark Air Base on the eve of talks between the Philippines and the United States over the future of American military bases in the Philippines.
May 15 – Portrait of Dr. Gachet by Vincent van Gogh is sold for a record $82.5 million.
May 17 – The World Health Organization removes homosexuality from its list of diseases.[13] This marked the beginning of a slow change towards public acceptance of homosexuality which is still ongoing.
May 18 – German reunification: East Germany and West Germany sign a treaty to emerge their economic and social systems, effective July 1.
May 19 – The US and the USSR agree to end production of chemical weapons and to destroy most of their stockpiles of chemical weapons.
May 20
Cold War: The first post-Communist presidential and parliamentary elections are held in Romania.
An Israeli gunman kills 7 Palestinians, leading to bloody riots in the Israeli-occupied Gaza Strip and West Bank.
May 21 – In Kashmir, a Kashmiri Islamic leader is assassinated and Indian security forces open fire on mourners carrying his body, killing at least 47 people.
May 22
Cold War: The leaders of the Yemen Arab Republic and the People's Democratic Republic of Yemen announce the unification of their countries as the Republic of Yemen.
Microsoft releases Windows 3.0.
May 27
In the Burmese general election, Burma's first multiparty election in 30 years, the National League for Democracy led by Aung San Suu Kyi wins in a landslide, but the State Law and Order Restoration Council nullifies the election results.
In the Colombian presidential election, César Gaviria is elected President of Colombia; he takes office on August 7.
May 29
Mikhail Gorbachev arrives in Ottawa for a 29-hour visit.
Boris Yeltsin is elected as the first ever elected president of the Russian Soviet Federative Socialist Republic.
European Bank for Reconstruction and Development (EBRD) founded.
May 30 - George H. W. Bush and Mikhail Gorbachev begin a four-day summit meeting in Washington, D.C.
June
June 1
Cold War: U.S. President George H. W. Bush and Soviet Union leader Mikhail Gorbachev sign a treaty to end chemical weapon production and begin destroying their respective stocks.
Members of the Provisional Irish Republican Army shoot and kill Major Michael Dillon-Lee and Private William Robert Davies of the British Army. Dillon-Lee is killed outside his home in Dortmund, Germany and Davies is killed at a railway station in Lichfield, England.
June 2
The Lower Ohio Valley tornado outbreak spawns 88 confirmed tornadoes in Illinois, Indiana, Kentucky, and Ohio, killing 12; 37 tornadoes occur in Indiana, eclipsing the previous record of 21 during the Super Outbreak of April 1974.
Namibia recognizes the Sahrawi Arab Democratic Republic (SADR).
June 4 – Violence breaks out in the Kirghiz Soviet Socialist Republic between the majority Kyrgyz people and minority Uzbeks over the distribution of homestead land.
June 7
Metropolitan Alexy of Leningrad is elected Russian Orthodox Patriarch of Moscow and all Rus'.
Nickelodeon Studios opens
Universal Studios Orlando opens
June 8
The 1990 FIFA World Cup begins in Italy. This was the first broadcast of digital HDTV in history; Europe would not begin HDTV broadcasting en masse until 2004.[14]
Prime Minister of Israel Yitzhak Shamir ends 88 days with only an acting government by forming a coalition of right-wing and religious parties led by Shamir's Likud party.
June 8–9 – In the Czechoslovakian parliamentary election, Czechoslovakia's first free election since 1946, the Civic Forum wins the most seats but fails to secure a majority.
June 9 – Mega Borg oil spill in the Gulf of Mexico near Galveston, Texas.
June 10
Alberto Fujimori is elected President of Peru; he takes office on July 28.
First round of the Bulgarian Constitutional Assembly election sees the Bulgarian Socialist Party win a majority. The second round of voting is held June 17.
June 12
Cold War: The Congress of People's Deputies of the Russian Federation formally declares its sovereignty.
In the Algerian local elections, Algeria's first multiparty election since 1962, the Islamic Salvation Front wins control of more than half of municipalities and 32 of Algeria's 48 provinces.
June 13 – June 1990 Mineriad: Fighting breaks out in Romania in the aftermath of the Romanian Revolution, between the supporters of Nicolae Ceaușescu (executed December 1989) and the Communist regime, and those of the new regime.
Cold War - The destruction of the Berlin Wall by East Germany officially starts, 7 months after it was opened the previous November. [15]
June 17–30 – Nelson Mandela tours North America, visiting 3 Canadian and 8 U.S. cities.
June 19 – The Communist Party of the Russian Soviet Federative Socialist Republic is founded in Moscow.
June 21 – An earthquake measuring 7.3 on the Richter Scale kills thousands in the Iranian city of Manjil.[16]
June 22
Underwater volcano Mount Didicas erupts in the Philippines.
Cold War: Checkpoint Charlie is dismantled.
June 23 – In Canada, the Meech Lake Accord of 1987 dies after the Manitoba and Newfoundland legislatures fail to approve it ahead of the deadline.
June 24 – Kathleen Young and Irene Templeton are ordained as priests in St Anne's Cathedral in Belfast, becoming the first female Anglican priests in the United Kingdom.
July
July 1 – German reunification: East Germany and West Germany merge their economies. The Inner German border (constructed 1945) also ceases operations after operating since World War II.
July 2
A stampede in a pedestrian tunnel leading to Mecca kills 1,426.
A U.S. District Court acquits Imelda Marcos on racketeering and fraud charges.
July 5 – In Kenya, riots erupt against the Kenya African National Union's monopoly on power.
July 6
President of Bulgaria Petar Mladenov resigns over charges he order tanks to disperse antigovernment protests in December 1989.
Somali president Siad Barre's bodyguards massacre anti-government demonstrators during a soccer match; 65 people are killed, more than 300 seriously injured.
July 7–8 – Martina Navratilova of the United States wins the 1990 Wimbledon Championships – Women's Singles and Stefan Edberg of Sweden wins the 1990 Wimbledon Championships – Men's Singles.
July 8 – West Germany defeats Argentina 1–0 to win the 1990 FIFA World Cup.
July 9–11 – The 16th G7 summit is held in Houston.
July 11 – Terrorists blow up passenger bus moving from Kelbecer to Tartar. 14 people were killed, 35 were wounded.[17]
July 15 – Tamil Tigers kill 168 Muslims in Colombo, Sri Lanka.
July 16 – An earthquake measuring 7.7 on the Richter Scale kills more than 1,600 in the Philippines.
July 22 – First round of the Mongolian legislative election, the first multiparty ever held in Mongolia; the Mongolian People's Party wins by a wide margin after the second round of voting on July 29.
July 25
George Carey, Bishop of Bath and Wells, is named as the new Archbishop of Canterbury.
The Serbian Democratic Party declares the sovereignty of the Serbs in Croatia.
July 26 – U.S. President George H. W. Bush signs the Americans with Disabilities Act, designed to protect disabled Americans from discrimination.
July 27
The parliament building and a government television house in Port of Spain, Trinidad and Tobago are stormed by the Jamaat al Muslimeen in a coup d'état attempt which lasts 5 days. Approximately 26 to 30 people are killed and several are wounded (including then Prime Minister, A. N. R. Robinson, who is shot in the leg).
Cold War: Belarus declares its sovereignty, a key step toward independence from the USSR.
July 28 – Alberto Fujimori becomes president of Peru.
July 28 - First Walmart in California and on the West Coast opens in Lancaster.[18]
July 30 – A Provisional Irish Republican Army car bomb kills former British politician and former Member of Parliament Ian Gow outside his home in England.
August
Gulf War Begins
August 1 – The National Assembly of Bulgaria elects Zhelyu Zhelev as the first non-Communist President of Bulgaria in 40 years.
RELCOM is created in the Soviet Union by combining several computer networks. Later in August, the Soviet Union got its first connection to the Internet.[19]
August 2 – Gulf War: Iraq invades Kuwait, eventually leading to the Gulf War.
August 2 - The first ban of smoking in bars in the US (and possibly the world) is passed in San Luis Obispo, California.[20]
August 6
Gulf War: The United Nations Security Council orders a global trade embargo against Iraq in response to its invasion of Kuwait.
President of Pakistan Ghulam Ishaq Khan dismisses Prime Minister of Pakistan Benazir Bhutto, accusing her of corruption and abuse of power.
The South African government and ANC begin talks on ending Apartheid in South Africa.
August 7
U.S. President Bush orders U.S. combat planes and troops to Saudi Arabia to prevent a possible attack by Iraq.
Prime Minister of India V. P. Singh announces plan to reserve 49% of civil service jobs for lower-caste Hindus. The plan triggers riots, leaving at least 70 dead by September.
August 8
Iraq announces that it has formally annexed Kuwait.
The government of Peru announces an austerity plan that results in huge increases in the price of food and gasoline. The plan sets off days of rioting and a national strike on August 21.
August 10
Egypt, Syria, and 10 other Arab nations vote to send military forces to Saudi Arabia to discourage an invasion from Iraq.
A passenger bus, traveling along the route "Tbilisi-Agdam", is blown up; 20 people died and 30 were injured. Organizers of the crime, Armenians A. Avanesian and M. Tatevosian, were brought to criminal trial.[17]
August 12
In South Africa, fighting breaks out between the Xhosa people and the Zulu people; more than 500 people are killed by the end of August.
"Sue", the best preserved Tyrannosaurus rex specimen ever found, is discovered near Faith, South Dakota.
August 19 – Leonard Bernstein conducts his final concert, ending with Ludwig van Beethoven's Symphony No. 7 performed by the Boston Symphony Orchestra.
August 21 – Gambia, Ghana, Guinea, Nigeria, and Sierra Leone send peacekeepers to intervene in the First Liberian Civil War.
August 22 – U.S. President Bush calls up U.S. military reservists for service in the Persian Gulf Crisis.
August 23 – East Germany and West Germany announce they will unite on October 3.[21]
August 24
Armenia declares its independence from the Soviet Union.
Northern Ireland writer Brian Keenan is released from Lebanon after being held hostage for nearly 5 years.
August 26 – In Sofia, protesters set fire to the headquarters of the governing Bulgarian Socialist Party.
August 28 – The Plainfield Tornado (F5 on the Fujita scale) strikes the towns of Plainfield, Crest Hill, and Joliet, Illinois, killing 29 people (the strongest tornado to date to strike the Chicago metropolitan area).
August 30 – Collapse of the Soviet Union: Azerbaijan declares independence from Soviet Union.
September
September 1–10 – Pope John Paul II visits Tanzania, Burundi, Rwanda and Côte d'Ivoire.
September 2 – Cold War: Transnistria declares its independence from the Moldavian SSR; however, the declaration is not recognized by any government.
September 4 – Geoffrey Palmer resigns as Prime Minister of New Zealand and is replaced by Mike Moore.
September 4–6 – Premier of North Korea Yon Hyong-muk meets with President of South Korea Roh Tae-woo, the highest level contact between leaders of the two Koreas since 1945.
September 5 – Sri Lankan Civil War: Sri Lankan Army soldiers kill 158 civilians.
September 6 – In Burma, the State Law and Order Restoration Council orders the arrest of Aung San Suu Kyi and five other political dissidents.
September 9
U.S. President Bush and Soviet President Gorbachev meet in Helsinki to discuss the Persian Gulf crisis.
First Liberian Civil War: Liberian president Samuel Doe is captured by rebel leader Prince Johnson and killed in a filmed execution.
Sri Lankan Civil War: Sri Lankan Army soldiers kill 184 civilians in Batticaloa.
September 10 - First Pizza Hut opens in Soviet Union.[22]
September 11
Gulf War: U.S. President George H. W. Bush delivers a nationally televised speech in which he threatens the use of force to remove Iraqi soldiers from Kuwait.
First Pizza Hut opens in the People's Republic of China, nearly 3 years after the first KFC opened there in 1987.[22]
September 12
Cold War: The two German states and the Four Powers sign the Treaty on the Final Settlement with Respect to Germany in Moscow, paving the way for German reunification.
A judge in Australia orders the arrest of media tycoon Christopher Skase, former owner of the Seven Network, after he fails to give evidence in a liquidator's examination of failed shipbuilding company Lloyds Ships Holdings, an associate of Skase's Qintex Australia Ltd.[23]
September 18
The International Olympic Committee awards the 1996 Summer Olympics to Atlanta, Georgia.
The Provisional Irish Republican Army tries to assassinate Air Chief Marshal Sir Peter Terry at his home near Stafford, England. Hit by at least 9 bullets, the former Governor of Gibraltar survives.
September 24 – The Supreme Soviet of the Soviet Union grants Gorbachev special powers for 18 months to secure the Soviet Union's transition to a market economy.
September 27 - David Souter is confirmed to serve on the Supreme Court, replacing retiring Justice William Brennan.
September 29 – Washington, D.C.'s National Cathedral is finished.
September 29–30 – The United Nations World Summit for Children draws more than 70 world leaders to United Nations Headquarters.
October
October 3: The former flag of West Germany becomes the flag of all Germany.
Tim Berners-Lee begins his work on the World Wide Web, 19 months after his seminal 1989 outline of what would become the Web concept.[24]
October 1 – The rebel Rwandan Patriotic Front invades Rwanda from Uganda, marking the start of the Rwandan Civil War.
October 1 - First Walmart in the Northeastern United States opens in York, Pennsylvania.[25]
October 3 – Cold War: East Germany and West Germany reunify into a single Germany.
October 4 – In the Philippines, rebel forces seize two military posts on the island of Mindanao, before surrendering on October 6.
October 8
Israeli–Palestinian conflict: In Jerusalem, Israeli police kill 17 Palestinians and wound over 100 near the Dome of the Rock mosque on the Temple Mount.
Globalization: First McDonald's restaurant is opened in Mainland China in Shenzhen, near Hong Kong.[10] Since 1979, Shenzhen has been a Special economic zone.
October 13 – Lebanese Civil War: Syrian military forces invade and occupy Mount Lebanon, ousting General Michel Aoun's government. This effectively consolidates Syria's 14 year occupation of Lebanese soil.
October 14 – Composer and conductor Leonard Bernstein dies of a heart attack at his home in New York City at the age of 72.
October 15
Cold War: Soviet Union leader Mikhail Gorbachev is awarded the Nobel Peace Prize for his efforts to lessen Cold War tensions and reform his nation.
South Africa ends segregation of libraries, trains, buses, toilets, swimming pools, and other public facilities.
October 17- A peace agreement which formally ended 28 years of Sarawak Communist insurgency in Malaysia was signed by North Kalimantan Communist Party insurgents
October 24 – In the Pakistani general election, Prime Minister Bhutto's Pakistan Peoples Party loses power to a center-right coalition government.
October 25–28 - Taxi blockade in Hungary.
October 27
Cold War: The Supreme Soviet of Kyrgyzstan chooses Askar Akayev as the republic's first president.
The New Zealand general election is won by the New Zealand National Party, and its leader, Jim Bolger, becomes prime minister.
October 29 – In Norway, the government headed by Prime Minister of Norway Jan P. Syse collapses.
November
Margaret Thatcher, the UK's only female Prime Minister, resigns after 11 years.
The earliest known portable digital camera sold in the United States ships. [26]
November 1 – Mary Robinson defeats odds-on favorite Brian Lenihan to become the first female President of Ireland.
November 2 - British Satellite Broadcasting and Sky Television plc merge to form BSkyB as a result of massive losses.
November 3 – Gro Harlem Brundtland assumes office as Prime Minister of Norway.
November 5 – Rabbi Meir Kahane, founder of the far-right Kach movement, is shot dead after a speech at a New York City hotel.
November 6 – Nawaz Sharif is sworn in as Prime Minister of Pakistan.
November 7 – Indian Prime Minister Singh resigns over losing a confidence vote in the Parliament of India, having lost the support of Hindus who want a Muslim mosque in Ayodhya torn down to build a Hindu temple.
November 9
A new constitution comes into effect in the Kingdom of Nepal, establishing multiparty democracy and constitutional monarchy; this is the culmination of the 1990 People's Movement.
The Parliament of Singapore enacts the Maintenance of Religious Harmony Act.
November 10 – Chandra Shekhar becomes Prime Minister of India as head of a minority government.
November 12
Akihito is enthroned as the 125th emperor of Japan following the death of his father on January 7, 1989.
Tim Berners-Lee publishes a more formal proposal for the World Wide Web.[27]
November 13
The first known web page is written.[28]
In New Zealand, David Gray kills 13 people in what will become known as the Aramoana massacre.
November 14 – Germany and Poland sign a treaty confirming the border at the Oder–Neisse line.
November 15 – STS-38: Space Shuttle Atlantis is launched on a classified U.S. military mission.
President Bush signed new Clean Air Act, focused on urban pollution and cancer-causing emissions from industrial sources.
November 16 – Home Alone is released to theaters. It would become the highest grossing live-action comedy film of all time.
November 17 – Soviet President Gorbachev proposes a radical restructuring of the Soviet government, including the creation of a Federal Council to be made up of the heads of the 15 Soviet republics.
November 19-21 – Leaders of Canada, the United States, and 32 European nations meet in Paris to formally mark the end of the Cold War.
November 21
Charter of Paris for a New Europe signed.
Agreement for decriminalization of homosexual acts between consenting adults in Queensland.
The second Nintendo video game console Super Famicom is released in Japan.
November 22 – Margaret Thatcher announces she will not contest the second ballot of the leadership election for the Conservative Party (UK).
November 25 – Lech Wałęsa and Stanisław Tymiński win the first round of the first Polish presidential election.
November 27 – Women's suffrage is introduced in the last Swiss half-canton of Appenzell Innerrhoden.
November 28 – Prime Minister of Singapore Lee Kuan Yew resigns and is replaced by Goh Chok Tong.
November 29
Gulf War: The United Nations Security Council passes UN Security Council Resolution 678, authorizing military intervention in Iraq if that nation does not withdraw its forces from Kuwait and free all foreign hostages by Tuesday, January 15, 1991.
Prime Minister of Bulgaria Andrey Lukanov and his government of former Communists resign under pressure from strikes and street protests.
December
December 1
Channel Tunnel workers from the United Kingdom and France meet 40 metres beneath the English Channel seabed, establishing the first land connection between Great Britain and the mainland of Europe for around 8,000 years.
President of Chad Hissène Habré is deposed by the Patriotic Salvation Movement and replaced as president by its leader Idriss Déby.
December 2 – The German federal election (the first election held since German reunification) is won by Helmut Kohl, who becomes Chancellor of Germany.
December 3
At Detroit Metropolitan Airport, Northwest Airlines Flight 1482 (a McDonnell Douglas DC-9) collides with Northwest Airlines Flight 299 (a Boeing 727) on the runway, killing 8 passengers and 4 crew members on Flight 1482.
Mary Robinson begins her term as President of Ireland, becoming the first female to hold this office.
December 4 – President of Bangladesh Hussain Muhammad Ershad resigns; he is replaced by Shahabuddin Ahmed, who becomes interim president.
December 6
Saddam Hussein releases the Western hostages.
President Hussain Muhammad Ershad of Bangladesh is forced to resign following massive protests.
December 7
In Brussels, trade talks break fail because of a dispute between the U.S. and the European Union over farm export subsidies.
The National Assembly of Bulgaria elects Dimitar Iliev Popov as Prime Minister of Bulgaria.
December 9
Slobodan Milošević becomes President of Serbia.
Lech Wałęsa wins the 2nd round of Poland's first presidential election.
December 16 – Jean-Bertrand Aristide is elected president of Haiti, ending 3 decades of military rule.
December 20 – Eduard Shevardnadze announces his resignation as Soviet Minister of Foreign Affairs
Tim Berners-Lee completes the test for the first webpage at CERN.
December 22
The first constitution of the Republic of Croatia is adopted.
The Marshall Islands and Federated States of Micronesia become independent, after the termination of their trusteeship.
The Polish government-in-exile is dissolved in London after being in exile since 1939.
December 23 – In the Slovenian independence referendum, 88.5% of the overall electorate (94.8% of votes), with the turnout of 93.3%, supported independence of the country.
December 24 – Ramsewak Shankar is ousted as President of Suriname by a military coup.
December 31 – Russian Garry Kasparov holds his title by winning the World Chess Championship match against his countryman Anatoly Karpov.
January 7: The Pisa tower closed.
January 1
Poland becomes the first country in Eastern Europe to begin abolishing its state socialist economy. Poland also withdraws from the Warsaw Pact.
Glasgow begins its year as European Capital of Culture.
Rowan Atkinson's Mr. Bean debuts in a Thames Television special.
January 3 – United States invasion of Panama: General Manuel Noriega, the deposed "strongman of Panama", surrenders to American forces.
January 4 – Two trains collide in Sangi, Pakistan, killing between 200 and 300 people and injuring an estimated 700 others.
January 7 – The Leaning Tower of Pisa is closed to the public because of safety concerns.
January 9 – Ugandan Lt. Gen. Bazilio Olara-Okello, who led a coup against Dr. Apolo Milton Obote's government, dies in Ormduruman Hospital in Khartoum, Sudan.
January 11 – Cold War: In Lithuania, 300,000 demonstrate for independence.
January 15
The National Assembly of Bulgaria votes to end one party rule by the Bulgarian Communist Party.
Thousands storm the Stasi headquarters in East Berlin in an attempt to view their government records.
Martin Luther King Day Crash – Telephone service in Atlanta, St. Louis, and Detroit, including 9-1-1 service, goes down for nine hours, due to an AT&T software bug.
January 20
Cold War: Soviet troops occupy Baku, Azerbaijan, under the state of emergency decree issued by Soviet premier Mikhail Gorbachev, and kill over 130 and wound over 700 protesters for national independence.[8]
Clashes break out between Indian troops and Muslim separatists in Kashmir.
The government of Haiti declares a state of siege, under which it suspends civil liberties, imposes censorship, and arrests political opponents. The state of siege is lifted on January 29.
January 22
The League of Communists of Yugoslavia votes to give up its monopoly on power.
Robert Tappan Morris, Jr. is convicted of releasing the Morris worm.
January 25
Avianca Flight 52 crashes into Cove Neck, Long Island, New York after a miscommunication between the flight crew and JFK Airport officials, killing 73 people on board.
Prime Minister of Pakistan Benazir Bhutto gives birth to a girl, becoming the first modern head of government to bear a child while in office.
Pope John Paul II begins an eight-day tour of Cape Verde, Guinea-Bissau, Mali, Burkina Faso, and Chad.
January 25–26 – The Burns' Day storm kills 97 in northwestern Europe.
January 27 – The city of Tiraspol in the Moldavian SSR briefly declares independence.
January 28 – Four months after their exit from power, the Polish United Workers' Party votes to dissolve itself and reorganize itself as the Social Democracy of the Republic of Poland.[9]
January 29
The trial of Joseph Hazelwood, former skipper of the Exxon Valdez, begins in Anchorage, Alaska. He is accused of negligence that resulted in America's second worst oil spill to date.
In Holmdel, New Jersey, scientists at Bell Labs announce they have created a digital optical processor that could lead to the development of superfast computers that use pulses of light rather than electric currents to make calculations.
January 31
Globalization – The first McDonald's in Moscow, Russia opens 8 months after construction began on 3 May 1989. 8 months later the first McDonald's in Mainland China is opened in Shenzhen.[10]
War on Terror – Liberal Muslim Rashad Khalifa is murdered in Tucson, Arizona; his killer is theorized to be a member of an early al-Qaeda sleeper cell.[4]
President of the United States George H. W. Bush gives his first State of the Union address and proposes that the U.S. and the Soviet Union make deep cuts to their military forces in Europe.
January 29: Trial relating to Exxon Valdez.
February
Smoking is banned on all cross-country flights in the United States. [11]
February 2 – Apartheid in South Africa: F. W. de Klerk announces the unbanning of the African National Congress and promises to release Nelson Mandela.
February 7
The Communist Party of the Soviet Union votes to end its monopoly of power, clearing the way for multiparty elections.
In the Tajik Soviet Socialist Republic, rioting breaks out against the settlement of Armenian refugees there.
February 10
President of South Africa F. W. de Klerk announces that Nelson Mandela will be released the next day.
Las Cruces Bowling Alley massacre: 2 people walked into the 10 Pin Alley in Las Cruces, New Mexico, (known then as the Las Cruces Bowl) and shot seven people, four of which were killed. The case is currently unsolved.
February 11 – Nelson Mandela is released from Victor Verster Prison, near Cape Town, South Africa, after 27 years behind bars.
February 12 – Representatives of NATO and the Warsaw Pact meet in Ottawa for an "Open Skies" conference. The conference results in agreements about superpower troop levels in Europe and on German reunification.
February 13
German reunification: An agreement is reached for a two-stage plan to reunite Germany.
Drexel Burnham Lambert files for bankruptcy protection, Chapter 11.
February 14 – The Pale Blue Dot photograph of Earth is sent back from the Voyager 1 probe after completing its primary mission, from around 3.5 billion miles away.
February 15
The United Kingdom and Argentina restore diplomatic relations after 8 years. The UK had severed ties in response to Argentina's invasion of the Falkland Islands, a British Dependent Territory, in 1982.
In Cartagena, Colombia, a summit is held between President of the United States George H. W. Bush, President of Bolivia Jaime Paz Zamora, President of Colombia Virgilio Barco Vargas, and President of Peru Alan García. The leaders pledge additional cooperation in fighting international drug trafficking.
February 24 – The Lithuanian Soviet Socialist Republic holds the first democratic election in the history of the Soviet Union.
February 26
The Sandinistas are defeated in the Nicaraguan elections, with Violeta Chamorro elected as the new president of Nicaragua, replacing Daniel Ortega.
The USSR agrees to withdraw all 73,500 troops from Czechoslovakia by July, 1991.
February 27 – Exxon Valdez oil spill: Exxon and its shipping company are indicted on 5 criminal counts.
February 28 – President of Nicaragua Daniel Ortega announces a cease-fire with the U.S.-backed contras.
March
March 1
A fire at the Sheraton Hotel in Cairo, Egypt, kills 16 people.
Steve Jackson Games is raided by the U.S. Secret Service, prompting the later formation of the Electronic Frontier Foundation.
The Royal New Zealand Navy discontinues its daily rum ration.
Luis Alberto Lacalle, a grandson of the late politician and diplomat Luis Alberto de Herrera, is sworn in as President of Uruguay.
March 3 – The International Trans-Antarctic Scientific Expedition, a group of six explorer for six nations, completes the first dog sled crossing of Antarctica.
March 6 – An SR-71 sets a U.S. transcontinental speed record of 1 hour 8 minutes 17 seconds, on what is publicized as its last official flight.
March 9
Police seal off Brixton in South London after another night of protests against the poll tax.
Newfoundland Premier Clyde Wells confirms he will rescind Newfoundland's approval of the Meech Lake Accord.
March 10 – Eighteen months after seizing power in a coup, Prosper Avril is ousted in Haiti.
March 11 – Cold War: Lithuania declares independence from the Soviet Union with the Act of the Re-Establishment of the State of Lithuania.
March 12
Cold War: Soviet soldiers begin leaving Hungary under terms of an agreement to withdraw all Soviet troops by June 1.
Patricio Aylwin is sworn in as the first democratically elected Chilean president since 1970.
March 13 – The Supreme Soviet of the Soviet Union approves changes to the Constitution of the Soviet Union to create a strong U.S.-style presidency. Mikhail Gorbachev is elected to a five-year term as the first-ever President of the Soviet Union on March 15.
March 15
Iraq hangs British journalist Farzad Bazoft for spying. Daphne Parish, a British nurse, is sentenced to 15 years' imprisonment as an accomplice.
Mikhail Gorbachev is elected as the first executive president of the Soviet Union.
Cold War: The Soviet Union announces that Lithuania's declaration of independence is invalid.
Fernando Collor de Mello takes office as President of Brazil, Brazil's first democratically elected president since Jânio Quadros in 1961. The next day, he announces a currency freeze and freezes large bank accounts for 18 months.
March 18
Twelve paintings, collectively worth $100 to $300 million, are stolen from the Isabella Stewart Gardner Museum in Boston, Massachusetts by 2 thieves posing as police officers. This is the largest art theft in US history, and the paintings (as of 2011) have not been recovered.
Cold War: East Germany holds its first free elections.
March 20 – Ferdinand Marcos's widow, Imelda Marcos, goes on trial for bribery, embezzlement, and racketeering.
March 21 – After 75 years of South African rule since World War I, Namibia becomes independent.
March 24 – In the Australian federal election, the Australian Labor Party, led by Prime Minister of Australia Bob Hawke, clings to power with a reduced majority.
March 25
In New York City, a fire due to arson at an illegal social club called "Happy Land" kills 87.
Archbishop of Canterbury Robert Runcie announces his intention to retire at the end of the year.
In the Hungarian parliamentary election, Hungary's first multiparty election since 1948, the Hungarian Democratic Forum wins the most seats.
March 26 – The 62nd Academy Awards, hosted by Billy Crystal, are held at the Dorothy Chandler Pavilion in Los Angeles, California, with Driving Miss Daisy winning Best Picture.
March 27 – The United States begins broadcasting TV Martí to Cuba.
March 28 – U.S. President George H. W. Bush posthumously awards Jesse Owens the Congressional Gold Medal.
March 30 – Cold War: After its first free elections during the Soviet era on March 18, Estonia declares Soviet rule to have been illegal since 1940.
March 31 – "The Second Battle of Trafalgar": A massive anti-poll tax demonstration in Trafalgar Square, London, turns into a riot; 471 people are injured, and 341 are arrested.
April
April 1
The Community Charge (poll tax) takes effect in England and Wales amid widespread protests
Strangeways Prison riot: The longest prison riot in Britain's history begins at Strangeways Prison in Manchester, and continues for 3 weeks and 3 days, until April 25.
The Ultimate Warrior defeats Hulk Hogan to win the WWF Championship in a Title for Title, winner takes all match at WrestleMania VI in front of nearly 68,000 people at the SkyDome in Toronto, Ontario.
The 1990 United States Census begins. There are 248,709,873 residents in the U.S.
April 6 – Robert Mapplethorpe's "The Perfect Moment" show of nude and homoerotic photographs opens at the Cincinnati Contemporary Arts Center, in spite of accusations of indecency by Citizens for Community Values.
April 7
Iran–Contra affair: John Poindexter is found guilty of 5 charges for his part in the scandal; the convictions are later reversed on appeal.
Scandinavian Star, a Bahamas-registered ferry, catches fire en route from Norway to Denmark, leaving 158 dead.
April 8
In Nepal, Birendra of Nepal lifts a ban on political parties following violent protests.
In the Greek legislative election, the conservative New Democracy wins the most seats in the Hellenic Parliament; its leader, Konstantinos Mitsotakis, becomes Prime Minister of Greece on April 11.
In the Socialist Federal Republic of Yugoslavia, the Socialist Republic of Slovenia holds Yugoslavia's first multiparty election since 1938. After the election, a center-right coalition led by Lojze Peterle forms Yugoslavia's first non-Communist government since 1945.
April 9 – Comet Austin, the brightest comet visible from Earth since 1975, makes its closest approach to the sun.
April 12 – Lothar de Maizière becomes prime minister of East Germany, heading a conservative coalition that favors German reunification.
April 13 – Cold War: The Soviet Union apologizes for the Katyn massacre.
April 15 – Food poisoning kills 450 guests at an engagement party in Uttar Pradesh.
April 14 - Junk bond financier Michael Milken pleaded guilty to fraud-related charges. He agreed to pay US$500 million in restitution and was sentenced on November 21 to 10 years in jail.
April 22
Lebanon hostage crisis: Lebanese kidnappers release American educator Robert Polhill, who had been held hostage since January 1987.
Earth Day 20 is celebrated by millions worldwide.
April 24
Cold War: West Germany and East Germany agree to merge currency and economies on July 1.
STS-31: The Hubble Space Telescope is launched aboard Space Shuttle Discovery.[12]
President of Zaire Mobutu Sese Seko lifts a 20-year ban on opposition parties.
April 25 – Violeta Chamorro is elected President of Nicaragua.
April 30 – Lebanon hostage crisis: Lebanese kidnappers release American educator Frank H. Reed, who had been held hostage since September 1986.
May
May 1 – The former Episcopal Church in the Philippines (supervised by the Episcopal Church of the United States of America) is granted full autonomy and raised to the state of an Autocephalous Anglican province and renamed the Episcopal Church of the Philippines.
May 2 – In London, a man brandishing a knife robs a courier of bearer bonds worth £292 million (the second largest mugging to date).
May 2–4 – First talks between the government of South Africa and the African National Congress.
May 4 – Cold War: Latvia declares independence from the Soviet Union.
May 6–13 – Pope John Paul II visits Mexico.
May 8
Cold War: Estonia restores the formal name of the country, the Republic of Estonia, as well as the state emblems (the coat of arms, the flag and the anthem).
Rafael Ángel Calderón Fournier assumes office as President of Costa Rica.
May 9 – In South Korea, police battle anti-government protesters in Seoul and two other cities.
May 13 – In the Philippines, gunmen kill two United States Air Force airmen near Clark Air Base on the eve of talks between the Philippines and the United States over the future of American military bases in the Philippines.
May 15 – Portrait of Dr. Gachet by Vincent van Gogh is sold for a record $82.5 million.
May 17 – The World Health Organization removes homosexuality from its list of diseases.[13] This marked the beginning of a slow change towards public acceptance of homosexuality which is still ongoing.
May 18 – German reunification: East Germany and West Germany sign a treaty to emerge their economic and social systems, effective July 1.
May 19 – The US and the USSR agree to end production of chemical weapons and to destroy most of their stockpiles of chemical weapons.
May 20
Cold War: The first post-Communist presidential and parliamentary elections are held in Romania.
An Israeli gunman kills 7 Palestinians, leading to bloody riots in the Israeli-occupied Gaza Strip and West Bank.
May 21 – In Kashmir, a Kashmiri Islamic leader is assassinated and Indian security forces open fire on mourners carrying his body, killing at least 47 people.
May 22
Cold War: The leaders of the Yemen Arab Republic and the People's Democratic Republic of Yemen announce the unification of their countries as the Republic of Yemen.
Microsoft releases Windows 3.0.
May 27
In the Burmese general election, Burma's first multiparty election in 30 years, the National League for Democracy led by Aung San Suu Kyi wins in a landslide, but the State Law and Order Restoration Council nullifies the election results.
In the Colombian presidential election, César Gaviria is elected President of Colombia; he takes office on August 7.
May 29
Mikhail Gorbachev arrives in Ottawa for a 29-hour visit.
Boris Yeltsin is elected as the first ever elected president of the Russian Soviet Federative Socialist Republic.
European Bank for Reconstruction and Development (EBRD) founded.
May 30 - George H. W. Bush and Mikhail Gorbachev begin a four-day summit meeting in Washington, D.C.
June
June 1
Cold War: U.S. President George H. W. Bush and Soviet Union leader Mikhail Gorbachev sign a treaty to end chemical weapon production and begin destroying their respective stocks.
Members of the Provisional Irish Republican Army shoot and kill Major Michael Dillon-Lee and Private William Robert Davies of the British Army. Dillon-Lee is killed outside his home in Dortmund, Germany and Davies is killed at a railway station in Lichfield, England.
June 2
The Lower Ohio Valley tornado outbreak spawns 88 confirmed tornadoes in Illinois, Indiana, Kentucky, and Ohio, killing 12; 37 tornadoes occur in Indiana, eclipsing the previous record of 21 during the Super Outbreak of April 1974.
Namibia recognizes the Sahrawi Arab Democratic Republic (SADR).
June 4 – Violence breaks out in the Kirghiz Soviet Socialist Republic between the majority Kyrgyz people and minority Uzbeks over the distribution of homestead land.
June 7
Metropolitan Alexy of Leningrad is elected Russian Orthodox Patriarch of Moscow and all Rus'.
Nickelodeon Studios opens
Universal Studios Orlando opens
June 8
The 1990 FIFA World Cup begins in Italy. This was the first broadcast of digital HDTV in history; Europe would not begin HDTV broadcasting en masse until 2004.[14]
Prime Minister of Israel Yitzhak Shamir ends 88 days with only an acting government by forming a coalition of right-wing and religious parties led by Shamir's Likud party.
June 8–9 – In the Czechoslovakian parliamentary election, Czechoslovakia's first free election since 1946, the Civic Forum wins the most seats but fails to secure a majority.
June 9 – Mega Borg oil spill in the Gulf of Mexico near Galveston, Texas.
June 10
Alberto Fujimori is elected President of Peru; he takes office on July 28.
First round of the Bulgarian Constitutional Assembly election sees the Bulgarian Socialist Party win a majority. The second round of voting is held June 17.
June 12
Cold War: The Congress of People's Deputies of the Russian Federation formally declares its sovereignty.
In the Algerian local elections, Algeria's first multiparty election since 1962, the Islamic Salvation Front wins control of more than half of municipalities and 32 of Algeria's 48 provinces.
June 13 – June 1990 Mineriad: Fighting breaks out in Romania in the aftermath of the Romanian Revolution, between the supporters of Nicolae Ceaușescu (executed December 1989) and the Communist regime, and those of the new regime.
Cold War - The destruction of the Berlin Wall by East Germany officially starts, 7 months after it was opened the previous November. [15]
June 17–30 – Nelson Mandela tours North America, visiting 3 Canadian and 8 U.S. cities.
June 19 – The Communist Party of the Russian Soviet Federative Socialist Republic is founded in Moscow.
June 21 – An earthquake measuring 7.3 on the Richter Scale kills thousands in the Iranian city of Manjil.[16]
June 22
Underwater volcano Mount Didicas erupts in the Philippines.
Cold War: Checkpoint Charlie is dismantled.
June 23 – In Canada, the Meech Lake Accord of 1987 dies after the Manitoba and Newfoundland legislatures fail to approve it ahead of the deadline.
June 24 – Kathleen Young and Irene Templeton are ordained as priests in St Anne's Cathedral in Belfast, becoming the first female Anglican priests in the United Kingdom.
July
July 1 – German reunification: East Germany and West Germany merge their economies. The Inner German border (constructed 1945) also ceases operations after operating since World War II.
July 2
A stampede in a pedestrian tunnel leading to Mecca kills 1,426.
A U.S. District Court acquits Imelda Marcos on racketeering and fraud charges.
July 5 – In Kenya, riots erupt against the Kenya African National Union's monopoly on power.
July 6
President of Bulgaria Petar Mladenov resigns over charges he order tanks to disperse antigovernment protests in December 1989.
Somali president Siad Barre's bodyguards massacre anti-government demonstrators during a soccer match; 65 people are killed, more than 300 seriously injured.
July 7–8 – Martina Navratilova of the United States wins the 1990 Wimbledon Championships – Women's Singles and Stefan Edberg of Sweden wins the 1990 Wimbledon Championships – Men's Singles.
July 8 – West Germany defeats Argentina 1–0 to win the 1990 FIFA World Cup.
July 9–11 – The 16th G7 summit is held in Houston.
July 11 – Terrorists blow up passenger bus moving from Kelbecer to Tartar. 14 people were killed, 35 were wounded.[17]
July 15 – Tamil Tigers kill 168 Muslims in Colombo, Sri Lanka.
July 16 – An earthquake measuring 7.7 on the Richter Scale kills more than 1,600 in the Philippines.
July 22 – First round of the Mongolian legislative election, the first multiparty ever held in Mongolia; the Mongolian People's Party wins by a wide margin after the second round of voting on July 29.
July 25
George Carey, Bishop of Bath and Wells, is named as the new Archbishop of Canterbury.
The Serbian Democratic Party declares the sovereignty of the Serbs in Croatia.
July 26 – U.S. President George H. W. Bush signs the Americans with Disabilities Act, designed to protect disabled Americans from discrimination.
July 27
The parliament building and a government television house in Port of Spain, Trinidad and Tobago are stormed by the Jamaat al Muslimeen in a coup d'état attempt which lasts 5 days. Approximately 26 to 30 people are killed and several are wounded (including then Prime Minister, A. N. R. Robinson, who is shot in the leg).
Cold War: Belarus declares its sovereignty, a key step toward independence from the USSR.
July 28 – Alberto Fujimori becomes president of Peru.
July 28 - First Walmart in California and on the West Coast opens in Lancaster.[18]
July 30 – A Provisional Irish Republican Army car bomb kills former British politician and former Member of Parliament Ian Gow outside his home in England.
August
Gulf War Begins
August 1 – The National Assembly of Bulgaria elects Zhelyu Zhelev as the first non-Communist President of Bulgaria in 40 years.
RELCOM is created in the Soviet Union by combining several computer networks. Later in August, the Soviet Union got its first connection to the Internet.[19]
August 2 – Gulf War: Iraq invades Kuwait, eventually leading to the Gulf War.
August 2 - The first ban of smoking in bars in the US (and possibly the world) is passed in San Luis Obispo, California.[20]
August 6
Gulf War: The United Nations Security Council orders a global trade embargo against Iraq in response to its invasion of Kuwait.
President of Pakistan Ghulam Ishaq Khan dismisses Prime Minister of Pakistan Benazir Bhutto, accusing her of corruption and abuse of power.
The South African government and ANC begin talks on ending Apartheid in South Africa.
August 7
U.S. President Bush orders U.S. combat planes and troops to Saudi Arabia to prevent a possible attack by Iraq.
Prime Minister of India V. P. Singh announces plan to reserve 49% of civil service jobs for lower-caste Hindus. The plan triggers riots, leaving at least 70 dead by September.
August 8
Iraq announces that it has formally annexed Kuwait.
The government of Peru announces an austerity plan that results in huge increases in the price of food and gasoline. The plan sets off days of rioting and a national strike on August 21.
August 10
Egypt, Syria, and 10 other Arab nations vote to send military forces to Saudi Arabia to discourage an invasion from Iraq.
A passenger bus, traveling along the route "Tbilisi-Agdam", is blown up; 20 people died and 30 were injured. Organizers of the crime, Armenians A. Avanesian and M. Tatevosian, were brought to criminal trial.[17]
August 12
In South Africa, fighting breaks out between the Xhosa people and the Zulu people; more than 500 people are killed by the end of August.
"Sue", the best preserved Tyrannosaurus rex specimen ever found, is discovered near Faith, South Dakota.
August 19 – Leonard Bernstein conducts his final concert, ending with Ludwig van Beethoven's Symphony No. 7 performed by the Boston Symphony Orchestra.
August 21 – Gambia, Ghana, Guinea, Nigeria, and Sierra Leone send peacekeepers to intervene in the First Liberian Civil War.
August 22 – U.S. President Bush calls up U.S. military reservists for service in the Persian Gulf Crisis.
August 23 – East Germany and West Germany announce they will unite on October 3.[21]
August 24
Armenia declares its independence from the Soviet Union.
Northern Ireland writer Brian Keenan is released from Lebanon after being held hostage for nearly 5 years.
August 26 – In Sofia, protesters set fire to the headquarters of the governing Bulgarian Socialist Party.
August 28 – The Plainfield Tornado (F5 on the Fujita scale) strikes the towns of Plainfield, Crest Hill, and Joliet, Illinois, killing 29 people (the strongest tornado to date to strike the Chicago metropolitan area).
August 30 – Collapse of the Soviet Union: Azerbaijan declares independence from Soviet Union.
September
September 1–10 – Pope John Paul II visits Tanzania, Burundi, Rwanda and Côte d'Ivoire.
September 2 – Cold War: Transnistria declares its independence from the Moldavian SSR; however, the declaration is not recognized by any government.
September 4 – Geoffrey Palmer resigns as Prime Minister of New Zealand and is replaced by Mike Moore.
September 4–6 – Premier of North Korea Yon Hyong-muk meets with President of South Korea Roh Tae-woo, the highest level contact between leaders of the two Koreas since 1945.
September 5 – Sri Lankan Civil War: Sri Lankan Army soldiers kill 158 civilians.
September 6 – In Burma, the State Law and Order Restoration Council orders the arrest of Aung San Suu Kyi and five other political dissidents.
September 9
U.S. President Bush and Soviet President Gorbachev meet in Helsinki to discuss the Persian Gulf crisis.
First Liberian Civil War: Liberian president Samuel Doe is captured by rebel leader Prince Johnson and killed in a filmed execution.
Sri Lankan Civil War: Sri Lankan Army soldiers kill 184 civilians in Batticaloa.
September 10 - First Pizza Hut opens in Soviet Union.[22]
September 11
Gulf War: U.S. President George H. W. Bush delivers a nationally televised speech in which he threatens the use of force to remove Iraqi soldiers from Kuwait.
First Pizza Hut opens in the People's Republic of China, nearly 3 years after the first KFC opened there in 1987.[22]
September 12
Cold War: The two German states and the Four Powers sign the Treaty on the Final Settlement with Respect to Germany in Moscow, paving the way for German reunification.
A judge in Australia orders the arrest of media tycoon Christopher Skase, former owner of the Seven Network, after he fails to give evidence in a liquidator's examination of failed shipbuilding company Lloyds Ships Holdings, an associate of Skase's Qintex Australia Ltd.[23]
September 18
The International Olympic Committee awards the 1996 Summer Olympics to Atlanta, Georgia.
The Provisional Irish Republican Army tries to assassinate Air Chief Marshal Sir Peter Terry at his home near Stafford, England. Hit by at least 9 bullets, the former Governor of Gibraltar survives.
September 24 – The Supreme Soviet of the Soviet Union grants Gorbachev special powers for 18 months to secure the Soviet Union's transition to a market economy.
September 27 - David Souter is confirmed to serve on the Supreme Court, replacing retiring Justice William Brennan.
September 29 – Washington, D.C.'s National Cathedral is finished.
September 29–30 – The United Nations World Summit for Children draws more than 70 world leaders to United Nations Headquarters.
October
October 3: The former flag of West Germany becomes the flag of all Germany.
Tim Berners-Lee begins his work on the World Wide Web, 19 months after his seminal 1989 outline of what would become the Web concept.[24]
October 1 – The rebel Rwandan Patriotic Front invades Rwanda from Uganda, marking the start of the Rwandan Civil War.
October 1 - First Walmart in the Northeastern United States opens in York, Pennsylvania.[25]
October 3 – Cold War: East Germany and West Germany reunify into a single Germany.
October 4 – In the Philippines, rebel forces seize two military posts on the island of Mindanao, before surrendering on October 6.
October 8
Israeli–Palestinian conflict: In Jerusalem, Israeli police kill 17 Palestinians and wound over 100 near the Dome of the Rock mosque on the Temple Mount.
Globalization: First McDonald's restaurant is opened in Mainland China in Shenzhen, near Hong Kong.[10] Since 1979, Shenzhen has been a Special economic zone.
October 13 – Lebanese Civil War: Syrian military forces invade and occupy Mount Lebanon, ousting General Michel Aoun's government. This effectively consolidates Syria's 14 year occupation of Lebanese soil.
October 14 – Composer and conductor Leonard Bernstein dies of a heart attack at his home in New York City at the age of 72.
October 15
Cold War: Soviet Union leader Mikhail Gorbachev is awarded the Nobel Peace Prize for his efforts to lessen Cold War tensions and reform his nation.
South Africa ends segregation of libraries, trains, buses, toilets, swimming pools, and other public facilities.
October 17- A peace agreement which formally ended 28 years of Sarawak Communist insurgency in Malaysia was signed by North Kalimantan Communist Party insurgents
October 24 – In the Pakistani general election, Prime Minister Bhutto's Pakistan Peoples Party loses power to a center-right coalition government.
October 25–28 - Taxi blockade in Hungary.
October 27
Cold War: The Supreme Soviet of Kyrgyzstan chooses Askar Akayev as the republic's first president.
The New Zealand general election is won by the New Zealand National Party, and its leader, Jim Bolger, becomes prime minister.
October 29 – In Norway, the government headed by Prime Minister of Norway Jan P. Syse collapses.
November
Margaret Thatcher, the UK's only female Prime Minister, resigns after 11 years.
The earliest known portable digital camera sold in the United States ships. [26]
November 1 – Mary Robinson defeats odds-on favorite Brian Lenihan to become the first female President of Ireland.
November 2 - British Satellite Broadcasting and Sky Television plc merge to form BSkyB as a result of massive losses.
November 3 – Gro Harlem Brundtland assumes office as Prime Minister of Norway.
November 5 – Rabbi Meir Kahane, founder of the far-right Kach movement, is shot dead after a speech at a New York City hotel.
November 6 – Nawaz Sharif is sworn in as Prime Minister of Pakistan.
November 7 – Indian Prime Minister Singh resigns over losing a confidence vote in the Parliament of India, having lost the support of Hindus who want a Muslim mosque in Ayodhya torn down to build a Hindu temple.
November 9
A new constitution comes into effect in the Kingdom of Nepal, establishing multiparty democracy and constitutional monarchy; this is the culmination of the 1990 People's Movement.
The Parliament of Singapore enacts the Maintenance of Religious Harmony Act.
November 10 – Chandra Shekhar becomes Prime Minister of India as head of a minority government.
November 12
Akihito is enthroned as the 125th emperor of Japan following the death of his father on January 7, 1989.
Tim Berners-Lee publishes a more formal proposal for the World Wide Web.[27]
November 13
The first known web page is written.[28]
In New Zealand, David Gray kills 13 people in what will become known as the Aramoana massacre.
November 14 – Germany and Poland sign a treaty confirming the border at the Oder–Neisse line.
November 15 – STS-38: Space Shuttle Atlantis is launched on a classified U.S. military mission.
President Bush signed new Clean Air Act, focused on urban pollution and cancer-causing emissions from industrial sources.
November 16 – Home Alone is released to theaters. It would become the highest grossing live-action comedy film of all time.
November 17 – Soviet President Gorbachev proposes a radical restructuring of the Soviet government, including the creation of a Federal Council to be made up of the heads of the 15 Soviet republics.
November 19-21 – Leaders of Canada, the United States, and 32 European nations meet in Paris to formally mark the end of the Cold War.
November 21
Charter of Paris for a New Europe signed.
Agreement for decriminalization of homosexual acts between consenting adults in Queensland.
The second Nintendo video game console Super Famicom is released in Japan.
November 22 – Margaret Thatcher announces she will not contest the second ballot of the leadership election for the Conservative Party (UK).
November 25 – Lech Wałęsa and Stanisław Tymiński win the first round of the first Polish presidential election.
November 27 – Women's suffrage is introduced in the last Swiss half-canton of Appenzell Innerrhoden.
November 28 – Prime Minister of Singapore Lee Kuan Yew resigns and is replaced by Goh Chok Tong.
November 29
Gulf War: The United Nations Security Council passes UN Security Council Resolution 678, authorizing military intervention in Iraq if that nation does not withdraw its forces from Kuwait and free all foreign hostages by Tuesday, January 15, 1991.
Prime Minister of Bulgaria Andrey Lukanov and his government of former Communists resign under pressure from strikes and street protests.
December
December 1
Channel Tunnel workers from the United Kingdom and France meet 40 metres beneath the English Channel seabed, establishing the first land connection between Great Britain and the mainland of Europe for around 8,000 years.
President of Chad Hissène Habré is deposed by the Patriotic Salvation Movement and replaced as president by its leader Idriss Déby.
December 2 – The German federal election (the first election held since German reunification) is won by Helmut Kohl, who becomes Chancellor of Germany.
December 3
At Detroit Metropolitan Airport, Northwest Airlines Flight 1482 (a McDonnell Douglas DC-9) collides with Northwest Airlines Flight 299 (a Boeing 727) on the runway, killing 8 passengers and 4 crew members on Flight 1482.
Mary Robinson begins her term as President of Ireland, becoming the first female to hold this office.
December 4 – President of Bangladesh Hussain Muhammad Ershad resigns; he is replaced by Shahabuddin Ahmed, who becomes interim president.
December 6
Saddam Hussein releases the Western hostages.
President Hussain Muhammad Ershad of Bangladesh is forced to resign following massive protests.
December 7
In Brussels, trade talks break fail because of a dispute between the U.S. and the European Union over farm export subsidies.
The National Assembly of Bulgaria elects Dimitar Iliev Popov as Prime Minister of Bulgaria.
December 9
Slobodan Milošević becomes President of Serbia.
Lech Wałęsa wins the 2nd round of Poland's first presidential election.
December 16 – Jean-Bertrand Aristide is elected president of Haiti, ending 3 decades of military rule.
December 20 – Eduard Shevardnadze announces his resignation as Soviet Minister of Foreign Affairs
Tim Berners-Lee completes the test for the first webpage at CERN.
December 22
The first constitution of the Republic of Croatia is adopted.
The Marshall Islands and Federated States of Micronesia become independent, after the termination of their trusteeship.
The Polish government-in-exile is dissolved in London after being in exile since 1939.
December 23 – In the Slovenian independence referendum, 88.5% of the overall electorate (94.8% of votes), with the turnout of 93.3%, supported independence of the country.
December 24 – Ramsewak Shankar is ousted as President of Suriname by a military coup.
December 31 – Russian Garry Kasparov holds his title by winning the World Chess Championship match against his countryman Anatoly Karpov.