On this day in 1914, Archduke of Austria Franz Ferdinand and his wife Sophie were assassinated in Sarajevo. The incident led to World War I.
On this day in 1919, the Treaty of Versailles was signed in Paris, bringing fighting to an end between Germany and the Allies of World War I.
On this day in 1950, during the Korean War, Seoul was captured by North Korean troops.
On this day in 1964, Malcolm X formed the Organization of Afro-American Unity.
On this day in 1969, Stonewall Riots began in New York City, marking the start of the Gay Rights Movement.
And on this day in 2004, sovereign power was handed to the interim government of Iraq by the Coalition Provisional Authority, ending the US-led rule of that nation.