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U.S. History
What year was the polio vaccine developed by Jonas Salk?
U.S. History
What year was the polio vaccine developed by Jonas Salk?
1920
1966
1936
1955
More Questions from U.S. History
Which U.S. President was the only one to be pictured on a coin while still in office?
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What U.S. General was known as "Old Hickory"?
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How many U.S. Senators represent each state?
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What President decorated the first White House Christmas Tree?
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Under which President did Warren Christopher and Madeleine Albright serve as secretaries of state?
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Who was the highest ranking U.S. naval officer to die in WWII?
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In what year did Toys for Tots start to bring toys to needy children?
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What's the name of the hurricane that hit the coast of South Carolina on September 22,1988?
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