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: WORLD HISTORY 
Clue: In a 1918 treaty, this country gave up Ukraine but soon recovered it
russia

Category: AMERICAN HISTORY 
Clue: Fleeing the capital on August 24, 1814, she took a Gilbert Stuart portrait of Washington with her
dolley madison

Category: FLYING 
Clue: Tourists take off on popular helicopter excursions over this "Garden Island" of Hawaii

kauai