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: WOMEN WRITERS 
Clue: Mary Chesnut's take on this U.S. war was part of a Ken Burns TV documentary

A: the civil war
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Q: Category: HOMOPHONES 
Clue: A caustic substance in soap, or an untruth

A: lye/lie
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Q: Category: DON'T BUG ME! 
Clue: The spider species Argyroneta aquatica lives mostly in this environment

A:
water
****