April 30

313		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 treaty of Westminster.
1563		All Jews are expelled from France by order of Charles VI.
1725		Spain withdraws from the Quadruple Alliance.
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.
1849		Giuseppe Garabaldi, the Italian patriot and guerrilla leader, repulses a French attack on Rome.
1864		Work begins on the Dams along the Red River, which will allow Union General Nathaniel Banks' troops to sail over the rapids above Alexandria, Louisiana.
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.
1973		Nixon announces the resignation of H.R. Haldeman, John Ehrlichman, and other top aides.
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.