The first semi-permanent settlements appeared in Florida around 5000 B.C.
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No president of the United States was an only child for his parents.
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During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
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Teddy bears were named after U.S. President Theodore 'Teddy' Roosevelt.
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The largest hotel suite in the world is located 22 stories under the surface in the Grand Canyon Caverns. One night for two people in this 65 million year old cave is $700.
4
Seven U.S. states are named after sovereigns - four kings and three queens.
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