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.

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

[EX Q]: Category: INITIALLY YOURS 
Clue: One of the founders of the NAACP was this sociologist & writer of "The Souls of Black Folk"
[EX A]: w.e.b. dubois

[EX Q]: Category: U.S. RIVERS 
Clue: It's New York State's longest river
[EX A]:
the hudson