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What Was the Joseon Dynasty in Korea?
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Where Is the 38th Parallel?
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Why Do Rainbows Appear?
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What Is K-Pop?
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What Is an Archipelago?
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How Fast Can a Bullet Travel?
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What Is Welding?
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Who Was the Great Impostor?
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How Many Countries Participate in the Olympics?
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Have You Ever Tasted Tofu?
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Can You Play Tennis on a Table?
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What Is Kimchi?
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How Does a Lighter Make Fire?
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Why Don’t Planes Fly in a Straight Line?
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How Were Swimming Strokes Invented?
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Why Do We Bruise?
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How Old Are Fairy Tales?
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Why Are Chili Peppers So Spicy?
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What Is Wasabi?
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Who Were the Samurai?