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: HOW DO THEY WORK? 
Clue: Many car salesman work on "straight" this, though you're better off buying from one who's on salary

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

A: the gadsden purchase
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Q: Category: NONFICTION 
Clue: Grammar is hot!  This bestseller is Lynne Truss' "Zero Tolerance Approach to Punctuation"

A:
eats, shoots & leaves
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