“Harry Potter and the Deathly Hallows – Part 2” premiered in London.
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In just 57 seconds, illusionist Harry Houdini successfully unchained himself while underwater.
Sir Isaac Newton gained a master's degree from Trinity College, Cambridge, England.
Construction began on the Hoover Dam in Nevada.
The world celebrated the introduction of sliced bread for the first time.
NASA's Opportunity Mars rover launched from the Florida Cape Canaveral Space Force Station.
