180 :Twelve inhabitants of Scillium in North Africa executed for being Christians. This is the earliest record of Christianity in that part of the world.
1203 :Fourth Crusade captures Constantinople by assault; the Byzantine emperor Alexius III Angelus flees from his capital into exile.
1453 :Hundred Years' War: Battle of Castillon - The French under Jean Bureau utterly defeat the English under the Earl of Shrewsbury, who is killed in the battle in Gascony
1686 :A meeting takes place at Lüneburg between several Protestant powers in order to discuss the formation of an 'evangelical' league of defence, called the 'Confederatio Militiae Evan
1762 :Catherine II becomes tzar of Russia upon the accidental murder of Peter III of Russia.
1771 :Bloody Falls Massacre: Chipewyan chief Matonabbee traveling as the guide to Samuel Hearne on his Arctic overland journey, massacre a group of unsuspecting Inuit.
1791 :Members of the French National guard under the command of General Lafayette open fire on a crowd of radical Jacobins at the Champ de Mars, Paris, during the French Revolution, kil
1794 :The sixteen Carmelite Martyrs of Compiegne are executed 10 days prior to the end of the French Revolution's Reign of Terror.
1815 :Napoleonic Wars: In France, Napoleon surrenders at Rochefort, Charente-Maritime to British forces.
1856 :The Great Train Wreck of 1856, occurs in Fort Washington, Pennsylvania killing over 60 people.
1899 :NEC Corporation is organized as the first Japanese joint venture with foreign capital.
1917 :King George V of the United Kingdom issues a Proclamation stating that the male line descendants of the British royal family will bear the surname Windsor.
1918 :By order of the Bolshevik Party and carried out by Cheka, Emperor Nicholas II of Russia, his immediate family, and retainers were murdered at the Ipatiev House in Ekaterinburg, Ru
1918 :RMS Carpathia, the ship that rescued the 705 survivors from the RMS Titanic, is sunk off Ireland by the Unterseeboot 55 with 5 lives lost.
1933 :After successfully crossing the Atlantic ocean, the Lithuanian research aircraft Lituanica crashes in Europe under mysterious circumstances.
1936 :Spanish Civil War: An Armed Forces rebellion against the recently-elected leftist Popular Front government of Spain starts the Spanish civil war.
1944 :Port Chicago disaster: Near the San Francisco Bay, two ships laden with ammunition for the war explode in Port Chicago, California, killing 320.
1944 :World War II: Napalm incendiary bombs were dropped for the first time by American P-38 pilots on a fuel depot at Coutances, near St. Lô, France
1945 :World War II: Potsdam Conference - At Potsdam, President Harry S. Truman, Soviet leader Joseph Stalin, and British Prime Minister Winston Churchill, the three main Allied leaders,
1951 :Western New England College in Springfield, Massachusetts is chartered.
1955 :Disneyland televises its grand opening in Anaheim, California
1962 :Nuclear testing: The Small Boy test shot Little Feller I becomes the last atmospheric test detonation at the Nevada Test Site.
1968 :Revolution in Iraq when Abdul Rahman Arif was overthrown and the Ba'ath Party installed as the governing power in Iraq with Ahmed Hassan al-Bakr as the new Iraqi President.
1973 :King Mohammed Zahir Shah of Afghanistan is deposed by his cousin Mohammed Daoud Khan while in Italy undergoing eye surgery.
1975 :Apollo-Soyuz Test Project: An American Apollo and a Soviet Soyuz spacecraft dock with each other in orbit marking the first such link-up between spacecraft from the two nations.
1976 :History of East Timor: East Timor was annexed, and became the 27th province of Indonesia.
1976 :The opening of the Summer Olympics is marred by 25 African teams boycotting the New Zealand team
1979 :Nicaraguan president General Anastasio Somoza Debayle resigns and flees to Miami.
1981 :Hyatt Regency walkway collapse in Kansas City, Missouri killing 114 people and injuring more than 200 caused by structural failure.
1989 :First flight of the B-2 Spirit Stealth Bomber.
1996 :Off the coast of Long Island, New York, a Paris-bound Boeing 747 carrying TWA flight 800 explodes, killing all 230 on board.
1997 :The F.W. Woolworth Company closes after 117 years in business.
1998 :A diplomatic conference adopts the Rome Statute of the International Criminal Court, establishing a permanent international court to prosecute individuals for genocide, crimes aga
1998 :Biologists report in the journal Science how they sequenced the genome of the bacterium that causes syphilis, Treponema pallidum.
1998 :Papua New Guinea earthquake: A tsunami triggered by an undersea earthquake destroys 10 villages in Papua New Guinea killing an estimated 3,183, leaving 2,000 more unaccounted for
2000 :An F2 tornado ripped through Guelph, Ontario during the later portions of the evening.
2007 :TAM Airlines (TAM Linhas Aéreas) Flight 3054 crashed upon landing during rain in São Paulo. This is Brazil's deadliest aviation accident to date with an estimated 199 deaths.