Napoleon Bonaparte left Egypt to return home to France.
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The first-ever photograph was taken of the Earth from the surface of the Moon.
Chris Messina Tweeted #barcamp, which became the first use of a hashtag on Twitter.
Nicki Minaj's Super Freaky Girl debuted at number one on Billboard's Hot 100.
Armenia declared its independence from the Soviet Union.
The first-ever message was sent from a ship to the shore at Cliff House, San Francisco.
