U.S. History

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

More Questions from U.S. History
Where was the battle of Bunker Hill fought?
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Who was the first U.S. President to use Camp David as a retreat?
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Who was elected the Speaker of the House for the 39th Congress in 1865?
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What TV news anchor wrote "The Greatest Generation"?
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What former U.S. Senate leader was born on July 22, 1923?
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What state did Alfonse D'Amato represent?
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What state did Dick Cheney represent in Congress?
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In 1991, President George H. Bush was diagnosed with what disease which is caused by thyroid over activity?
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