In just 57 seconds, illusionist Harry Houdini successfully unchained himself while underwater.
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UK Prime Minister Boris Johnson resigned after numerous Conservative Party members voiced their lack of confidence in him.
'Harry Potter and the Deathly Hallows – Part 2' premiered in London.
Spanish conquistadors defeated a large Aztec army at the Battle of Otumba.
Construction began on the Hoover Dam in Nevada.
The London bombings took place.
