Answer: Popular sovereignty
The products produced on the prairies went mostly to "<span>a. to people in the cities" since this was a time before mass transportation made it easy to ship the products further. </span>
They thought slavery was terrible and they didn't want to take sides with Southern Virginia, where slavery was the main part of the economy and the society. They thought it was immoral, selfish, and cruel. They didn't want to be a part of the movement that supported slavery. (during the civil war)
I hope this helps!
~kaikers