Gough Whitlam took office as the 21st Prime Minister of Australia and formed a duumvirate with his deputy Lance Barnard, ending 23 years of Liberal–Country Party government.
The "glasnost meeting" took place in Moscow, becoming the first demonstration in the Soviet Union after World War II and marking the beginning of the civil rights movement in the country.
American Revolutionary War: Continental Army colonel Henry Knox arrived at Fort Ticonderoga in New York to arrange the transport of 60 tons of artillery (depicted) to support the siege of Boston.