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.

Category: LANGUAGES 
Clue: Of the 6 official languages of the United Nations, the one spoken by the fewest people worldwide
french

Category: BRITISH MONARCHS 
Clue: The last British king not named George, William or Edward was named this
james

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

corinth