New York became the 11th state in the United States.
Liberia became Africa's first republic.
The Office of the Chief Examiner, which in 1935 became the Federal Bureau of Investigation (FBI), was created.
President Harry S Truman signed the National Security Act, creating the Department of Defense, the National Security Council, the Central Intelligence Agency, and the Joint Chiefs of Staff.
King Farouk I of Egypt abdicated after a coup led by Gamal Abdal Nasser.
Fidel Castro was among a group of rebelling anti-Batistas who unsuccessfully attacked an army barracks.