U.S. History

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

More Questions from U.S. History
If Benjamin Franklin had his way, what would America's national bird be?
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When did the American Civil War take place?
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Name the U.S. warship which sunk the Confederate raider Alabama?
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Which First Lady was known as "The Duchess"?
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What President decorated the first White House Christmas Tree?
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A gavel is used by whom?
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What former NBA star ran for the democratic nomination for U.S. President?
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Which of these ceremonial chiefs was also known for his knowledge of healing techniques?
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