TASK DEFINITION: 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.
PROBLEM: Category: GREAT BRITS
Clue: He joined the British navy at age 12 & died at the Battle of Trafalgar 35 years later

SOLUTION: lord nelson

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

SOLUTION: the panama canal

PROBLEM: Category: "OIL" IT
Clue: To spring back upon firing

SOLUTION:
recoil