U.S. Geography

What Iowa monument is named for the only person known to die on the Lewis and Clark expedition?

More Questions from U.S. Geography
The peak of which mountain is Missouri's highest point?
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Which lake that shares its name with a U.S. state borders Wisconsin?
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In which state is the Magnolia both the state flower and state tree?
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Which is not a Seattle neighborhood?
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The "Craters of the Moon" are in what state?
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What is the only Nevada lake with an outlet to the sea?
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What is the Riverwalk called along the banks of the Des Moines River in Des Moines, Iowa?
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The Hoover Dam can be found between which two US states?
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