U.S. History

A vaccine to prevent what terrible disease was invented in the U.S. in 1952?

More Questions from U.S. History
Who won the Revolutionary War?
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Which 1887 Act weakened Native American tribal organization?
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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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The slogan "A chicken in every pot and a car in every garage" is identified with whom?
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How old do you need to be in the U.S. to vote?
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Who was considered the U.S. "Ace of Aces" during World War II?
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Which first lady had the honor of being both the wife of a President, and the mother of a President?
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What future Vice President served as President Gerald Ford's Chief of Staff from 1975-77?
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