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: FLAGS 
Clue: Christopher Columbus' flag bore a cross with their initials on either side

A: ferdinand & isabella
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Q: Category: MY NAME IS BARBARA 
Clue: She appeared with Lassie in the 1949 film "The Sun Comes Up" before she played Beaver's mother on TV

A: barbara billingsley
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Q: Category: SUCCESSORS 
Clue: He took over from Ehud Barak as prime minister of Israel

A:
ariel sharon
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