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What Do B.C. and A.D. Stand For?
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What Are the New Seven Wonders of the World?
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How Many Steps Does Chichén Itzá Have?
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Who Drew the Nazca Lines in the Desert?
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Who Was Muhammad?
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Why Does Hanukkah Change Dates Every Year?
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Why Are There Seven Days in a Week?
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Why Don’t All Months Have the Same Number of Days?
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When Is the Winter Solstice?
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Was Rome Built in a Day?
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How Do You Turn Over a New Leaf?
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How Were Birthstones Chosen for Each Month?
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How Many Degrees Are in a Circle?
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When Is Your Half Birthday?
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Why Do Some Years Leap Ahead?
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What Is Ramadan?
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How Did April Fools' Day Begin?
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What’s So Super About Super Bowl Sunday?
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How Did the Months of the Year Get Their Names?
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