Piero the Unfortunate was stripped of his title of Lord of Florence, Italy, and exiled.
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The first sustained flight of over five minutes was achieved and traveled three miles in the process.
Paul Rudd was named People Magazine's 2021 Sexiest Man Alive.
Theodore Roosevelt became the first US president to visit another country while in office, visiting Puerto Rico and Panama.
NASA launched the Apollo 4 test spacecraft to test the Saturn V rocket for the first time.
The Stockholm Bloodbath came to an end when the final executions took place.
