Who perfected the first American revolver?

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What Science-fiction author founded the Church of Scientology in 1953?

According to Greek mythology, what was the only spirit that remained in Pandora's box?

Is Japan closer to the North Pole or the South Pole?

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What nation is named for the Hapsburg king of Spain from 1556 to 1598?

From whom did the US buy the Virgin Islands?

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What decade saw the completion of the Empire State Building?

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What element has the periodic table name Sb?