U.S. Geography

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

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What is the most visited place in Montana?
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In which U.S. state includes the cities of Boston, Worcester, Springfield and Lowell?
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What was the population of Denver in 1910?
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Delaware is divided into how many counties?
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Where in the U.S. would you find area code 201?
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Which is not a Seattle neighborhood?
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Which park in Massachusetts became the first public park in America?
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Which of these cities is not in Florida?
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