U.S. History

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

More Questions from U.S. History
How many U.S. Senators represent each state?
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What happens if the U.S. Vice President doesn't complete his term?
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When was Jimmy Carter born?
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How many points did the Dow Jones drop on "Black Monday" in October 1987?
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Which U.S. Vice President was implicated in the Credit Mobilier Incident?
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What does the "E" stand for in Robert E. Lee?
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The Fox News Channel tried to block the use of "fair and balanced" on the cover of whose 2003 book?
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In which year did President Jackson sign the Indian Removal Act?
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