Use the passage to answer the question.

Question

What does the author mean in saying that popular sovereignty "undermined the Missouri compromise"?
(1 point)
It maintained the division of free and slave states.
It expanded slavery to the Northern free states.
It forced slaves who had escaped to be returned to a slave state.
It reopened debate over the border between free and slave states

Answer 1

The author means that popular sovereignty undermined the Missouri Compromise by reopening the debate over the border between free and slave states. This allowed for the possibility of slavery being expanded into territories where it had previously been prohibited, ultimately leading to the escalation of tensions between the North and South.

Answer 2

a b c d??

Answer 3

what the answer