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.
Science magazine announced that half the killer whale population would likely die due to human pollution.
Medal of Honor was awarded posthumously to Theodore Roosevelt Jr for his help on D-Day.
The Prussian government lifted a ban on Adolf Hitler's speeches.
The science-fiction TV series 'Star Trek: The Next Generation' first aired on CBS.
