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.

Category: MASSACRE 
Clue: In 1991 this Ohio-based team trounced the Miami Heat 148-80 in the biggest NBA triumph ever
the cleveland cavaliers

Category: RAIDERS 
Clue: John J. Pershing's attempts to stop this Mexican raider included the U.S. cavalry's "last charge"
pancho villa

Category: 19TH CENTURY AMERICA 
Clue: On July 5, 1846 John C. Fremont was chosen to direct the affairs of this "Bear Flag" republic

california