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

Answer: corinth


Question: Category: ACADEMY AWARD FIRSTS 
Clue: On March 5, 1936 screenwriter Dudley Nichols did this; it didn't happen again until an actor did it April 15, 1971

Answer: refused his oscar


Question: Category: HOLIDAYS 
Clue: It's observed on March 7 in California, March 26 in Spain & April 22 in Nebraska

Answer:
arbor day