U.S. History

In 1910, Thomas Edison was credited with which invention/discovery?

More Questions from U.S. History
Who was the first U.S. President since 1932 to lose re-election?
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What former wrestler served as Governor of Minnesota from 1999 to 2003?
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What popular name was given to a Strategic Defense Initiative to render nuclear war obsolete?
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Which year was the 200th anniversary of the Declaration of Independence celebrated?
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What family member did President John F. Kennedy name as Attorney General?
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What revolutionary said "I only regret I have but one life to lose for my country"?
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Which U.S. President was a bachelor?
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What did the CCC stand for in the 1930's?
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