- 476 – Romulus Augustulus is deposed when Odoacer proclaims himself “King of Italy“, thus ending the Western Roman Empire.
- 626 – Li Shimin, posthumously known as Emperor Taizong of Tang, assumes the throne over the Tang dynasty of China.
- 929 – Battle of Lenzen: Slavic forces (the Redarii and the Obotrites) are defeated by a Saxon army near the fortified stronghold of Lenzen in Brandenburg.
- 1260 – The Sienese Ghibellines, supported by the forces of Manfred, King of Sicily, defeat the Florentine Guelphs at Montaperti.
- 1282 – Peter III of Aragon becomes the King of Sicily.
- 1479 – The Treaty of Alcáçovas is signed by the Catholic Monarchs of Castile and Aragon on one side and Afonso V and his son, Prince John of Portugal.
- 1607 – The Flight of the Earls takes place in Ireland.
- 1666 – In London, England, the most destructive damage from the Great Fire occurs.
- 1774 – New Caledonia is first sighted by Europeans, during the second voyage of Captain James Cook.
- 1781 – Los Angeles is founded as El Pueblo de Nuestra Señora La Reina de los Ángeles (The Village of Our Lady, the Queen of the Angels) by 44 Spanish settlers.
- 1797 – Coup of 18 Fructidor in France.
- 1800 – The French garrison in Valletta surrenders to British troops who had been called at the invitation of the Maltese. The islands of Malta and Gozo become the Malta Protectorate.
- 1812 – War of 1812: The Siege of Fort Harrison begins when the fort is set on fire.
- 1839 – Battle of Kowloon: British vessels open fire on Chinese war junks enforcing a food sales embargo on the British community in China in the first armed conflict of the First Opium War.
- 1862 – American Civil War Maryland Campaign: General Robert E. Lee takes the Army of Northern Virginia, and the war, into the North.
- 1870 – Emperor Napoleon III of France is deposed and the Third Republic is declared.
- 1882 – The Pearl Street Station in New York City becomes the first power plant to supply electricity to paying customers.
- 1886 – American Indian Wars: After almost 30 years of fighting, Apache leader Geronimo, with his remaining warriors, surrenders to General Nelson Miles in Arizona.
- 1888 – George Eastman registers the trademark Kodak and receives a patent for his camera that uses roll film.
- 1912 – Albanian rebels succeed in their revolt when the Ottoman Empire agrees to fulfill their demands
- 1919 – Mustafa Kemal Atatürk, who founded the Republic of Turkey, gathers a congress in Sivas to make decisions as to the future of Anatolia and Thrace.
- 1923 – Maiden flight of the first U.S. airship, the USS Shenandoah.
- 1939 – World War II: William J. Murphy commands the first Royal Air Force attack on Germany.
- 1941 – World War II: A German submarine makes the first attack of the war against a United States warship, the USS Greer.
- 1944 – World War II: The British 11th Armoured Division liberates the Belgian city of Antwerp.
- 1944 – World War II: Finland exits from the war with Soviet Union.
- 1948 – Queen Wilhelmina of the Netherlands abdicates for health reasons.
- 1949 – The Peekskill riots erupt after a Paul Robeson concert in Peekskill, New York.
- 1950 – Darlington Raceway is the site of the inaugural Southern 500, the first 500-mile NASCAR race.
- 1951 – The first live transcontinental television broadcast takes place in San Francisco, from the Japanese Peace Treaty Conference.
- 1957 – American Civil Rights Movement: Little Rock Crisis: The governor of Arkansas calls out the National Guard to prevent African American students from enrolling in Central High School.
- 1963 – Swissair Flight 306 crashes near Dürrenäsch, Switzerland, killing all 80 people on board.
- 1964 – Scotland’s Forth Road Bridge near Edinburgh officially opens.
- 1967 – Vietnam War: Operation Swift begins when U.S. Marines engage the North Vietnamese in battle in the Que Son Valley.
- 1970 – Salvador Allende is elected President of Chile.
- 1971 – Alaska Airlines Flight 1866 crashes near Juneau, Alaska, killing all 111 people on board.
- 1972 – Mark Spitz becomes the first competitor to win seven medals at a single Olympic Games.
- 1972 – The Price Is Right premieres on CBS. As of 2018, it is the longest running game show on American television.
- 1975 – The Sinai Interim Agreement relating to the Arab–Israeli conflict is signed.
- 1977 – The Golden Dragon massacre takes place in San Francisco.
- 1985 – The discovery of Buckminsterfullerene, the first fullerene molecule of carbon.
- 1989 – In Leipzig, East Germany, the first of weekly demonstration for the legalisation of opposition groups and democratic reforms takes place.
- 1998 – Google is founded by Larry Page and Sergey Brin, two students at Stanford University.
- 2001 – Tokyo DisneySea opens to the public as part of the Tokyo Disney Resort in Urayasu, Chiba, Japan.
- 2002 – The Oakland Athletics win their 20th consecutive game, an American League record.
- 2007 – Three terrorists suspected to be a part of Al-Qaeda are arrested in Germany after allegedly planning attacks on both the Frankfurt International airport and US military installations.
- 2010 – A 7.1 magnitude earthquake strikes the South Island of New Zealand causing widespread damage and several power outages.
-Source: wikipedia