1512 - The forces of the Holy League were heavily defeated by the French at the Battle of Ravenna.
1689 - William III and Mary II were crowned as joint sovereigns of Britain.
1713 - The Treaty of Utrecht was signed, ending the War of Spanish Succession.
1814 - Napoleon was forced to abdicate his throne. The allied European nations had marched into Paris on March 30, 1814. He was banished to the island of Elba.
1876 - The stenotype was patented by John C. Zachos.
1941 - Germany bombers blitzed Conventry, England.
1945 - During World War II, American soldiers liberated the Nazi concentration camp of Buchenwald in Germany.
1961 - Israel began the trial of Adolf Eichman, accused of World War II war crimes.
1970 - Apollo 13 blasted off on a mission to the moon that was disrupted when an explosion crippled the spacecraft. The astronauts did return safely.
1985 - Scientists in Hawaii measured the distance between the earth and moon within one inch.
1986 - Kellogg's stopped giving tours of its breakfast-food plant. The reason for the end of the 80-year tradition was said to be that company secrets were at risk due to spies from other cereal companies.
1998 - Northern Ireland's biggest political party, the Ulster Unionists, announced its backing of the historic peace deal.