August 6 events in history

1284 The Republic of Pisa is defeated in the Battle of Meloria by the Republic of Genoa, thus losing its naval dominance in the Mediterranean
1506 The Grand Duchy of Lithuania defeated the Crimean Khanate in the Battle of Kletsk
1538 Bogotá, Colombia, is founded by Gonzalo Jiménez de Quesada
1661 The Treaty of The Hague is signed by Portugal and the Dutch Republic
1777 American Revolutionary War: The bloody Battle of Oriskany prevents American relief of the Siege of Fort Stanwix
1787 Sixty proof sheets of the Constitution of the United States are delivered to the Constitutional Convention in Philadelphia, Pennsylvania
1806 Francis II, the last Holy Roman Emperor, abdicates, ending the Holy Roman Empire
1819 Norwich University is founded in Vermont as the first private military school in the United States
1824 Battle of Junin Peru
1825 Bolivia gains independence from Spain
1845 The Russian Geographical Society is founded in Saint Petersburg, Russia
1861 The United Kingdom annexes Lagos, Nigeria
1862 American Civil War: The Confederate ironclad CSS Arkansas is scuttled on the Mississippi River after suffering catastrophic engine failure near Baton Rouge, Louisiana
1870 Franco-Prussian War: The Battle of Spicheren is fought, resulting in a Prussian victory
1890 At Auburn Prison in New York, murderer William Kemmler becomes the first person to be executed by electric chair
1901 Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation
1912 The Bull Moose Party meets at the Chicago Coliseum
1914 World War I: Serbia declares war on Germany; Austria declares war on Russia
1914 World War I: First Battle of the Atlantic: Two days after the United Kingdom had declared war on Germany over the German invasion of Belgium, ten German U-boats leave their base in Heligoland to attack Royal Navy warships in the North Sea
1915 World War I: Battle of Sari Bair: The Allies mount a diversionary attack timed to coincide with a major Allied landing of reinforcements at Suvla Bay
1917 World War I: Battle of Mărăşeşti between the Romanian and German armies begins
1926 Gertrude Ederle becomes the first woman to swim across the English Channel
1926 In New York, New York, the Warner Bros.' Vitaphone system premieres with the movie Don Juan starring John Barrymore
1930 Judge Joseph Force Crater steps into a taxi in New York and disappears never to be seen again
1940 Estonia was illegally annexed by the Soviet Union
1942 Queen Wilhelmina of the Netherlands becomes the first reigning queen to address a joint session of the United States Congress
1944 The Warsaw Uprising occurs on August 1. It is brutally suppressed and all able-bodied men in Krakow are detained afterwards to prevent a similar uprising, the Krakow Uprising, that was planned but never carried out
1945 World War II: Hiroshima, Japan is devastated when the atomic bomb "Little Boy" is dropped by the United States B-29 Enola Gay. Around 70,000 people are killed instantly, and some tens of thousands die in subsequent years from burns and radiation poisoning
1956 After going bankrupt in 1955, the American broadcaster DuMont Television Network makes its final broadcast, a boxing match from St. Nicholas Arena in New York in the Boxing from St. Nicholas Arena series
1960 Cuban Revolution: Cuba nationalizes American and foreign-owned property in the nation
1962 Jamaica becomes independent from the United Kingdom
1964 Prometheus, a bristlecone pine and the world's oldest tree, is cut down
1965 US President Lyndon B. Johnson signs the Voting Rights Act of 1965 into law
1976 Zulfikar Ali Bhutto lays the foundation stone of Port Qasim, Karachi
1986 A low-pressure system that redeveloped off the New South Wales coast dumps a record 328 millimeters (13 inches) of rain in a day on Sydney, New South Wales, Australia
1988 The Tompkins Square Park Riot in New York City spurs a reform of the NYPD, held responsible for the event
1990 Gulf War: The United Nations Security Council orders a global trade embargo against Iraq in response to Iraq's invasion of Kuwait
1991 Tim Berners-Lee releases files describing his idea for the World Wide Web. WWW debuts as a publicly available service on the Internet
1991 Takako Doi, chair of the Social Democratic Party, becomes Japan's first female speaker of the House of Representatives
1996 NASA announces that the ALH 84001 meteorite, thought to originate from Mars, contains evidence of primitive life-forms
1997 Korean Air Flight 801 crashed at Nimitz Hill, Guam. (228 died, 26 lived)
2008 A military junta led by Mohamed Ould Abdel Aziz stages a coup d'état in Mauritania, overthrowing president Sidi Ould Cheikh Abdallahi
2011 A march in protest of the death of Mark Duggan in Tottenham, London, ends in a riot, sparking off a wave of rioting throughout the country over the following four nights
2012 NASA's Curiosity rover lands on the surface of Mars