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 consistency, answers should be in all lower cased letters.

Category: ENGINEERING 
Clue: The motto of this 1904-1914 engineering project was "The land divided, the world united"
the panama canal

Category: THE DIRECTOR 
Clue: Born in this city in 1895, J. Edgar Hoover graduated from its National University law school in 1917
washington

Category: SOUVENIRS & COLLECTIBLES 
Clue: The water tower is one of this city's attractions found inside a musical snow globe that plays "My Kinda Town"

chicago