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: MEDICINE & HISTORY 
Clue: Montezuma's real revenge: a 1741 British expedition to conquer Mexico was devastated by this "colorful" disease
[A]: yellow fever


[Q]: Category: POTPOURRI 
Clue: This chess piece that usually looks like part of a castle is sometimes called a castle
[A]: rook


[Q]: Category: THE CIVIL WAR 
Clue: Major Robert Anderson was in command of this S.C. fort when it was attacked in April 1861
[A]:
fort sumter