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: THE SENATE 
Clue: The 2 astronauts who went on to become U.S. Senators
john glenn

Category: HISTORIC NAMES 
Clue: In a 1935 poem this leader wrote, "The Red Army fears not the trials of the Long March"
mao tse-tung

Category: FOOD & DRINK HISTORY 
Clue: The world's first pure food & beverage law, one pertaining to beer, was proclaimed by the Duke of this region in 1516

bavaria