You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Q: Category: BEFORE HE WAS PRESIDENT... 
Clue: He went to Stanford & became a mining engineer

A: hoover
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Q: Category: U.S. GEOGRAPHY 
Clue: In 1937 the government set aside this Georgia swamp as a national wildlife refuge

A: okefenokee swamp
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Q: Category: STARTS WITH A PAST TENSE VERB 
Clue: Adjective for a union of states under a central government

A:
federal
****