World History

Which one of these inventions or discoveries happened most recently?

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Which couple is credited with forming the nation of Spain?
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Who was Mayor of Paris from 1977-1995?
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Where was porcelain invented between 600 and 900 CE?
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The Six-Day Arab-Israeli War was held in what year?
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What did Hitler do during his youth?
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Who was the Chief U.N. Weapons Inspector just prior to the Iraq War in 2003?
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When did the United States and Canada agree on borders?
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Who built Hampton Court Palace?
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