1609 - Delaware Bay was discovered by Henry Hudson.
1619 - Ferdinand II was elected Holy Roman Emperor.
1833 - Slavery was banned by the British Parliament throughout the British Empire.
1916 - Italy's declaration of war against Germany took effect during World War I.
1963 - Dr. Martin Luther King, Jr., gave his "I Have a Dream" speech at a civil rights rally in Washington, DC. More than 200,000 people attended.
1981 - John Hinckley, Jr. pled innocent to the charge of attempting to kill U.S. President Ronald Reagan. Hinckley was later acquitted by reason of insanity.
1990 - Iraq declared Kuwait to be its 19th province and renamed Kuwait City al-Kadhima.
1995 - A mortar shell killed 38 people in Sarajevo, Bosnia-Herzegovina. The act triggered NATO airstrikes against the Bosnian Serbs.
1996 - A divorce decree was issued for Britain's Charles and Princess Diana. This was the official end to the 15-year marriage.