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.
--------
Question: Category: QUID PRO QUO-POURRI 
Clue: Give me this Northwest African mountain range & I'll give you a book of the same name where you might see it

Answer: the atlas mountains


Question: Category: JOSE CAN YOU SEE 
Clue: The largest of the 4 modern countries Jose de San Martin helped liberate from European rule

Answer: argentina


Question: Category: "POO" POURRI 
Clue: Once used at sea, it's a spearlike weapon with a barbed head

Answer:
a harpoon