Answer:
Question 9: Slaves were property. Question 10: Popular sovereignty. Question 11: To preserve the Union by appeasing both sides of the slavery issue . Question 12: South's economy shifted from agriculture to industry. Question 13: It contradicted the fundamentals the country was founded on.
Explanation:
I promise every one of those is correct. I triple checked everything.
Please can I have a Brainliest? = )