King Carlos I of Portugal and his heir were assassinated in Lisbon.
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Isaac Briggs & William Longstreet was awarded a patent for the first steamboat in the US.
The first reusable spacecraft called ''Space Shuttle Columbia" broke apart when returning to Earth, and all seven astronauts on board died.
Joe Biden and his wife, Jill, founded the 'Biden Foundation.'
MP's in the UK voted in favor of triggering the European Union Bill (Article 50), which gave the government the power to prepare to leave the European Union.
Mary Queen of Scots received the death sentence from cousin Queen Elizabeth I.