U.S. History

Which of the following was designated a national monument first?

More Questions from U.S. History
What state did Robert Kennedy represent in the Senate?
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Which person is known as this: "Mother of the 19th Amendment"?
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What U.S. President coined the phrase "good to the last drop"?
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What U.S. General was known as "Old Hickory"?
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How old do you need to be in the U.S. to vote?
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What is unusual about the name of Quanah Parker, the last chief of the Comanche Indians?
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Whom did the United States fight in 1812?
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What popular name was given to a Strategic Defense Initiative to render nuclear war obsolete?
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