1762: Russia, Prussia and Austria sign a treaty agreeing on the partition of Poland.
1815: A peace treaty with Tripoli, which follows treaties with Algeria and Tunis, brings an end to the Barbary Wars.
1858: The first transatlantic cable is completed.
1861: Congress adopts the nation's first income tax to finance the Civil War.
1892: Harriet Tubman receives a pension from Congress for her work as a nurse, spy and scout during the Civil War.
1914: The first electric traffic signal lights are installed in Cleveland, Ohio.
1914: The British Expeditionary Force mobilizes for World War I.
1941: The German army completes taking 410,000 Russian prisoners in the Uman and Smolensk pockets in the Soviet Union.
1951: The United Nations Command suspends armistice talks with the North Koreans when armed troops are spotted in neutral areas.
1962: Actress Marilyn Monroe dies under mysterious circumstances.
1964: President Lyndon Johnson begins bombing North Vietnam in retaliation for the Gulf of Tonkin incident and asks Congress to go to war against North Vietnam.
1974: President Richard Nixon admits he ordered a cover-up for political as well as national security reasons.
1981: President Ronald Reagan fires 11,500 striking air traffic controllers.
1992: Four police officers are indicted on civil rights charges in the beating of Rodney King.
1997: The mastermind of the 1993 World Trade Center bombing, Ramzi Yousef, goes on trial.
2012: A gunman in Oak Creek, Wisconsin, opens fire in a Sikh temple, killing six before committing suicide.