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Who Invented the Candy Bar?
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How Are Maps Made?
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What Does "Top Secret" Mean?
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Who Invented the Cowboy Hat?
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Who Was Hans Christian Andersen?
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What Makes Bloodhounds Good Detectives?
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What Are the Ides Of March?
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Who Wrote the National Anthem?
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Who Invented Basketball?
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Which Bat Is Best?
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Who Was Irving Berlin?