U.S. Geography

What rock was adopted as Missouri's official state rock in 1967?

More Questions from U.S. Geography
What do Rhode Islanders refer to as "bubblers"?
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What is the largest state (land size) east of the Mississippi river?
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Delaware is divided into how many counties?
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Which is not a Seattle neighborhood?
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How many men died while building the Golden Gate Bridge?
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Nevada takes its name from a Spanish word meaning what?
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Which of these states had the fewest people residing within its borders at the start of the 21st century?
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Which state is called the "Valentine State"?
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