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.

[Q]: Category: HISTORIC AMERICANS 
Clue: A 2007 book about these 2 men is subtitled "Victorious American and Vanquished Virginian"
[A]: ulysses s. grant & robert e. lee


[Q]: Category: LANDMARKS 
Clue: Some of its pieces, which weighed up to 50 tons, were quarried at Marlborough Downs, about 20 miles away
[A]: stonehenge


[Q]: Category: FASHION HISTORY 
Clue: In 1849 Americans traveling to the California gold fields via boat popularized this hat
[A]:
panama hat