Why did South Carolinians support the concept of popular sovereignty?

1.It advanced the plantation system in Kansas.
2.It was a plan, introduced by a southerner, which was supported in the North and the South.
3.It showed that compromise was a peaceful way to solve problems.
4.It allowed for slavery to potentially expand above the line of the Missouri Compromise.

1 answer

4. It allowed for slavery to potentially expand above the line of the Missouri Compromise.