UK Prime Minister Boris Johnson resigned after numerous Conservative Party members voiced their lack of confidence in him.
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Spanish conquistadors defeated a large Aztec army at the Battle of Otumba.
The famous Great White Fleet left San Francisco to continue its around-the-world journey.
The 10th James Bond movie, 'The Spy Who Loved Me,' premiered in London.
NASA's Opportunity Mars rover launched from the Florida Cape Canaveral Space Force Station.
Sir Isaac Newton gained a master's degree from Trinity College, Cambridge, England.