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June 20 in History
2003
The WikiMedia Foundation is founded in St. Petersburg, Florida.
1991
The German parliament decides to move the capital from Bonn back to Berlin.
1990
Asteroid Eureka is discovered.
1982
The Argentine base (Corbeta Uruguay) on Southern Thule surrenders to Royal Marine commandos in the final action of the Falklands War.
1979
ABC News correspondent Bill Stewart is shot dead by a Nicaraguan soldier under the regime of Anastasio Somoza Debayle. The murder is caught on tape and sparked international outcry of the regime.
1973
Ezeiza massacre in Buenos Aires, Argentina. Snipers fire upon left-wing Peronists. At least 13 are killed and more than 300 are injured.
1963
The so-called "red telephone" is established between the Soviet Union and the United States following the Cuban Missile Crisis.
1960
Independence of Mali and Senegal.
1959
A rare June hurricane struck Canada's Gulf of St. Lawrence killing 35.
1956
A Venezuelan Super-Constellation crashes in the Atlantic Ocean off Asbury Park, New Jersey, killing 74 people.
1948
''Toast of the Town'', later ''The Ed Sullivan Show'', makes its television debut.
1944
World War II: The Battle of the Philippine Sea concludes with a decisive U.S. naval victory. The lopsided naval air battle is also known as the “Great Marianas Turkey Shoot”.
Continuation war: Soviet Union demands for an unconditional surrender from Finland during the beginning of partially successful Vyborg–Petrozavodsk Offensive. Finnish government declines the demand.
1919
150 die at the Teatro Yaguez fire, Mayagüez, Puerto Rico.
1893
Lizzie Borden is acquitted for the murders of her father and stepmother.
1877
Alexander Graham Bell installs the world's first commercial telephone service in Hamilton, Ontario, Canada.
1863
American Civil War: West Virginia is admitted as the 35th U.S. state.
1862
Barbu Catargiu, the Prime Minister of Romania, is assassinated.
1840
Samuel Morse receives the patent for the telegraph.
1837
Queen Victoria succeeds to the British throne.
1819
The U.S. vessel ''SS Savannah'' arrives at Liverpool, United Kingdom. She is the first steam-propelled vessel to cross the Atlantic, although most of the journey is made under sail.
1791
King Louis XVI of France and his immediate family begin the Flight to Varennes during The French Revolution.
1789
Deputies of the French Third Estate take the Tennis Court Oath.
1787
Oliver Ellsworth moves at the Federal Convention to call the government the United States.
1782
The U.S. Congress adopts the Great Seal of the United States.
1756
A British garrison is imprisoned in the Black Hole of Calcutta.
1685
Monmouth Rebellion: James Scott, 1st Duke of Monmouth declares himself King of England at Bridgwater.
1652
Tarhoncu Ahmet Paşa appointed grand vezir of the Ottoman Empire, served until 21 March 1653.
1631
The sack of Baltimore: the Irish village of Baltimore is attacked by Algerian pirates.
1214
The University of Oxford receives its charter.
451
Battle of Chalons: Flavius Aetius' battles Attila the Hun. After the battle, which was inconclusive, Attila retreats, causing the Romans to interpret it as a victory.