Pyotr Ilyich Tchaikovsky composed his “Swan Lake” ballet.
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The final gasps of the Crab Head nebula were observed as it went supernova.
General Laborer Thomas Stevens started his first bicycle trip around the world.
Edward & Sarah Bishop and seven others were examined by Magistrates in Salem, Massachusetts, for witchcraft.
Twenty million Americans mobilized to call for greater protections for our planet. This became the world's first Earth Day.
The US Congress passed legislation that allowed the 'In God We Trust' inscription on the currency.
