1538 – Bogotá Colombia, is founded by Gonzalo Jiménez de Quesada
1777 – American forces & allied indians attempting to relieve Fort Stanwix are ambushed by Loyalist forces & allied indians near Oriskany, New York.
1787 – Sixty proof sheets of the Constitution of the United States are delivered to the Constitutional Convention in Philadelphia
1862 – The Confederate ironclad CSS Arkansas is scuttled on the Mississippi River after earlier suffering catastrophic engine failure near Baton Rouge
1890 – William Kemmler becomes the first person in the U.S. to be executed by electric chair at Auburn Prison, New York
1912 – The Progressive “Bull Moose” Party opens its convention at the Chicago Coliseum.
1914 – Serbia declares war on Germany. Austria-Hungary declares war on Russia.
1945 – U.S Army Air Force Colonel Paul Tibbets and crew aboard the B29 bomber Enola Gay, drops “Little Boy” atomic bomb #L-11 on Hiroshima.
1965 – President Johnson signs the Voting Rights Act of 1965 into law.
1990 – The United Nations Security Council orders a global trade embargo against Iraq in response to the invasion of Kuwait.
2011 – A U.S. Army CH-47D helicopter, call sign Extortion 17 is shot down in Maidan Wardak province Afghanistan by Taliban forces, killing 23 U.S Navy SEAL Team-6 operators , 5 U.S. National Guard and Reserve aircrew, 2 U.S. Air Force ParaRescuemen, 1 U.S. Air Force Combat Controller, a U.S. military working dog, 7 Afghan soldiers, and 1 Afghan civilian.
2012 – NASA’s Curiosity rover lands on the surface of Mars.