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.
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Question: Category: MILITARY NEWS 
Clue: On June 11, 1997 the Army deactivated the 43rd Mobile Army Surgical Hospital, its last, in this country

Answer: korea


Question: Category: WORLD LEADERS 
Clue: Early in the 20th century, he took one of many pseudonyms, Nguyen Ai Quoc, or "Nguyen the Patriot"

Answer: ho chi minh


Question: Category: RIVERS 
Clue: The single greatest source of water power in the U.S. is on this river

Answer:
the columbia river