1991: Two diesel trains carrying commuters crash head-on, killing more than 40 people and injuring 400 in Japan. An investigation faults workers for allowing a train to depart without a green signal, an action found to be dangerous and illegal.
1955: The Soviet Union and seven of its European satellites sign a treaty establishing the Warsaw Pact, a mutual defense organization that put the Soviets in command of the armed forces of the member states. The treaty is signed in Warsaw, and includes the Soviet Union, Albania, Poland, Romania, Hungary, East Germany, Czechoslovakia, and Bulgaria as members.
1940: John Diefenbaker takes his seat in the House of Commons for the first time. He later becomes Prime Minister.