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.
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Question: Category: STATE CAPITAL FUN FESTS 
Clue: On Labor Day weekend, this capital invites you to step back in time & relive the Gold Rush days

Answer: sacramento


Question: Category: THE 19th CENTURY 
Clue: 1853 purchase that brought the contiguous U.S. about up to its present area

Answer: the gadsden purchase


Question: Category: HISTORY 
Clue: After years of construction, this canal finally opened for business August 15, 1914

Answer:
panama canal