Earth

How was the 12-mile limit of a country's boundary set?

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How many days does it take for the Earth to revolve around the sun?
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What type of fault is the San Andreas Fault?
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What kind of storm might produce a "whiteout"?
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What name is used specifically to describe the region around the South Pole?
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Which of these is the longest river in the world?
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What is petroleum as found in the earth, before it is refined?
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What type of gem is the Star of Africa or the Cullinar II?
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Where is the coldest place on earth?
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