The US started plans to construct its first nuclear battlefield weapon.
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The Soviet Union's ill-fated Soyuz 11 mission was launched from the Baikonur Cosmodrome.
Alexey Pajitnov shared his first playable version of Tetris with his colleagues.
The French ship named Aurore transported the first African slaves from Senegambia, West Africa, to Louisiana, US.
Taxes were raised in the US with the implementation of the Revenue Act.
Henry W. Seely patented the electric iron in the US.
