1619 – Ferdinand II, the King of Bohemia and Hungary, was unanimously elected as Holy Roman Emperor.
1833 – The Slavery Abolition Act 1833, officially abolishing slavery in most of the British Empire, received royal assent.
1909 – A military coup d'etat against the government of Dimitrios Rallis began in the Goudi neighbourhood of Athens, Greece.
1955 – African American teenager Emmett Till was murdered near Money, Mississippi, for flirting with a white woman, energizing the nascent American civil rights movement.
1993 – The asteroid 243 Ida (pictured) became the first found to have a moon when it was visited by NASA's Galileo probe.