Holy Emperor Louis IV of Bavaria defeated Frederick I of Austria during the Battle of Gammelsdorf.
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Piero the Unfortunate was stripped of his title of Lord of Florence, Italy, and exiled.
Paul Rudd was named People Magazine's 2021 Sexiest Man Alive.
The European Space Agency launched the Venus Express, the first European spacecraft to reach Venus.
NASA launched the Apollo 4 test spacecraft to test the Saturn V rocket for the first time.
George Bruce received the first US design patents for typefaces and bordering.
