0313: Licinius unifies the whole of the eastern Roman Empire under his own rule.
1250: King Louis IX of France is ransomed.
1527: Henry VIII of England and King Francis of France sign the Treaty of Westminster.
1789: George Washington is inaugurated as the first U.S. president.
1803: The United States doubles in size through the Louisiana Purchase, which was sold by France for $15 million.
1812: Louisiana is admitted into the Union as a state.
1930: The Soviet Union proposes a military alliance with France and Great Britain.
1931: The George Washington Bridge, linking New York City and New Jersey, opens.
1943: The British submarine HMS Seraph drops 'the man who never was,' a dead man the British planted with false invasion plans, into the Mediterranean off the coast of Spain.
1945: Adolf Hitler commits suicide in his bunker. Karl Donitz becomes his successor.
1968: U.S. Marines attack a division of North Vietnamese troops in the village of Dai Do.
1970: U.S. troops invade Cambodia to disrupt North Vietnamese Army base areas.
1972: The North Vietnamese launch an invasion of the South.
1975: North Vietnamese troops enter the Independence Palace of South Vietnam in Saigon ending the Vietnam War.
1980: Terrorists seize the Iranian Embassy in London.
Source: HistoryNet.com