1098 - First Crusade: Antioch falls to the crusaders after an eight-month siege.
1140 - French scholar Peter Abelard is found guilty of heresy.
1326 - Treaty of Novgorod delineates borders between Russia and Norway in Finnmark.
1539 - DeSoto claims Florida for Spain.
1608 - Samuel de Champlain completes his third voyage to New France at Tadoussac, Quebec.
1620 - Construction of the oldest stone church in French North America, Notre-Dame-des-Anges, begins in Quebec City, Quebec, Canada.
1621 - The Dutch West India Company receives a charter for New Netherlands.
1658 - Pope Alexander VII appoints François de Laval vicar apostolic in New France.
1665 - James Stuart, Duke of York (later to become King James II of England) defeats the Dutch Fleet off the coast of Lowestoft.
1770 - Mission San Carlos Borromeo de Carmelo is founded in Carmel-by-the-Sea, California.
1800 - U.S. President John Adams takes up residence in Washington, D.C. (in a tavern because the White House was not yet completed).
1839 - In Humen, China, Lin Tse-hsü destroys 1.2 million kg of opium confiscated from British merchants, providing Britain with a casus belli to open hostilities, resulting in the First Opium War.
1850 - The traditional founding date of Kansas City, Missouri. This was the date on which it was first incorporated by Jackson County, Missouri as the "City of Kansas".
1861 - American Civil War: Battle of Philippi (also called the Philippi Races) – Union forces rout Confederate troops in Barbour County, Virginia, now West Virginia, in first land battle of the War.
1864 - American Civil War: Battle of Cold Harbor – Union forces attack Confederate troops in Hanover County, Virginia.
1866 - The Fenians are driven out of Fort Erie, Ontario, into the United States.
1885 - In the last military engagement fought on Canadian soil Cree leader Big Bear escapes the North West Mounted Police.
1888 - The poem "Casey at the Bat", by Ernest Lawrence Thayer, is published in the San Francisco Examiner.
1889 - The coast to coast Canadian Pacific Railway is completed.
1889 - The first long-distance electric power transmission line in the United States is completed, running 14 miles between a generator at Willamette Falls and downtown Portland, Oregon.
1916 - The Reserve Officer Training Corps or ROTC is established by the U.S. Congress.
1916 - The National Defense Act is signed into law, increasing the size of the United States National Guard by 450,000 men.
1935 - One thousand unemployed Canadian workers board freight cars in Vancouver, British Columbia, beginning a protest trek to Ottawa, Ontario.
1937 - The Duke of Windsor marries Wallis Simpson.
1940 - World War II: The Luftwaffe bombs Paris.
1940 - World War II: The Battle of Dunkirk ends with a German victory and with Allied forces in full retreat.
1941 - World War II: The Wehrmacht razes the Greek village of Kandanos to the ground.
1956 - British Railways renames 'Third Class' passenger facilities as 'Second Class' (Second Class facilities had been abolished in 1875, leaving just First Class and Third Class).
1962 - An Air France Boeing 707 charter, Chateau de Sully crashes after an aborted takeoff from Paris, killing 130.
1963 - A Northwest Airlines DC-7 crashes in the Pacific Ocean off the coast of British Columbia, killing 101.
1965 - Launch of Gemini 4, the first multi-day space mission by a NASA crew. Crew-member Ed White performs the first American spacewalk.
1968 - Valerie Solanas, author of SCUM Manifesto, attempts to assassinate Andy Warhol by shooting him three times.
1969 - Melbourne-Evans collision: Off the coast of South Vietnam, the Australian aircraft carrier HMAS;Melbourne cuts the U.S. Navy destroyer USS;Frank E. Evans in half.
1973 - A Soviet supersonic Tupolev Tu-144 crashes near Goussainville, France, killing 14, the first crash of a supersonic passenger aircraft.
1979 - A blowout at the Ixtoc I oil well in the southern Gulf of Mexico causes at least 600,000 tons (176,400,000 gallons) of oil to be spilled into the waters, the worst oil spill to date.
1982 - The Israeli ambassador to the United Kingdom, Shlomo Argov, is shot on a London street. He survives but is permanently paralysed.
1984 - The Indian Army storms the Golden Temple (Harmandir Sahib), the most sacred shrine of Sikhism, near Amritsar.
1989 - The government of China sends troops to force protesters out of Tiananmen Square after seven weeks of occupation.
1989 - SkyDome is officially opened in Toronto, Ontario
1991 - Mount Unzen erupts in Kyūshū, Japan, killing 43 people, all of them either researchers or journalists.
1992 - Aboriginal Land Rights are granted in Australia in Mabo v Queensland (1988), a case brought about by Eddie Mabo.
1998 - Eschede train disaster: an ICE high speed train derails in Lower Saxony, Germany, causing 101 deaths.
2006 - The union of Serbia and Montenegro comes to an end with Montenegro's formal declaration of independence.
2007 - USS;Carter Hall engages pirates after they board the Danish ship Danica White off the coast of Somalia.