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: COLLECTIBLES 
Clue: When he moved into the White House, George W. Bush brought some of his over 150 autographed ones of these

Answer: baseballs


Question: Category: ANCIENT CITIES 
Clue: It sided with Sparta in the Peloponnesian War, & the Bible includes 2 letters to its Christians

Answer: corinth


Question: Category: 2001 NEWS 
Clue: In 2001 the zinc industry was up in arms over Rep. Jim Kolbe's bill calling for the phasing out of these

Answer:
pennies