U.S. Geography

Located in Nevada, what was the highest concrete dam in the world when it was built?

More Questions from U.S. Geography
What Mississippi college was founded in 1873 by Confederate General Mark P. Lowrey?
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When did Denver make the private use of less than an ounce of marijuana legal for adults?
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Besides the American flag, flags of what three other countries have flown over Michigan?
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If you went to Ted Stevens Anchorage International Airport, what state would you be in?
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Which state touches 4 of the great lakes?
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Which country controlled Illinois until 1763?
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Oklahoma was originally part of what 1803 U.S. land acquisition?
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Where in Arizona can stone trees be found?
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