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When Were ZIP Codes Invented?
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How Fast Can You Zip Through the Air?
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Who Invented the Zipper?
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What Type of Shark Is the Slowest?
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Why Do You Have To Pay Taxes?
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Have You Ever Been in a Spelling Bee?
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Why Did Women Make Doilies?
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Who Was the Queen of Soul?
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Which City Has The Longest Name?
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Who Invented the Toilet?
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How Does Mail Find You?
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What Is Elbow Grease?
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Why Are They Called "Flip-Flops"?
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How Do Hyperloops Work?
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Why Didn’t Canada Buy Alaska?
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Why Are All Snowflakes Different?
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Why Do Sidewalks Have Lines?
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Why Do Some Roads Have Tolls?
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Who Made the American Flag?
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Who Is the Unknown Soldier?