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: POLITICAL PHILOSOPHY 
Clue: The subtitle of this influential 1762 treatise is "Principes du droit politique" ("Principles of Political Right")
the social contract

Category: ACTORS 
Clue: While pregnant with him, the mother of this actor, gazing at the Uffizi's art, 1st felt him move, hence his 1st name
leonardo dicaprio

Category: U.S. COLLEGE TOWNS 
Clue: This 2-word city is named for the founders' wives (they had the same name) & the natural groves found there

ann arbor, michigan