The Declaration of Independence of the Mexican Empire was drafted at the National Palace in Mexico City.
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William the Conquerer landed on English shores and began the Norman Conquest.
Elon Musk announced that he was building a spaceship called Starship that would travel to Mars and return to Earth.
Marvin Gaye was given a star on Hollywood's Walk of Fame.
Science magazine announced that half the killer whale population would likely die due to human pollution.
The Prussian government lifted a ban on Adolf Hitler's speeches.