Today:
1446 – The Hangul alphabet is published in Korea by King Sejong the Great.
1514 – Mary Tudor, sister of Henry VIII, marries King Louis XII of France.
1635 – Roger Williams, founder of Rhode Island, is banished from the Massachusetts Bay Colony for his religious views.
1701 – The Collegiate School of Connecticut (later renamed Yale University) is chartered in Old Saybrook, Connecticut.
1806 – Prussia declares war on France, leading to the War of the Fourth Coalition.
1888 – The Washington Monument officially opens to the public.
1914 – World War I: The Siege of Antwerp ends with the city falling to German forces.
1936 – The Hoover Dam begins generating electricity and transmits it to Los Angeles.
1967 – Che Guevara is executed in Bolivia after his capture by Bolivian forces.
1986 – The Fox network, now one of the major U.S. television networks, makes its primetime debut.