Hey!! I believe that the answer is D. Ethnic and religious diversity!!
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More than 3 million people (including over 58,000 Americans) were killed in the Vietnam War
I believe that the answer to the question provided above is that the <span>westward expansion created a clash between sectional interests in Missouri because of the geographical location of Missouri it was being clashed.</span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
