What arguments did Abraham Lincoln use against the succession of the southern states select all that apply

Question

A. Succession would need to be approved through popular 70.
B. It was a union of people not states.
C. The southern states lack the power to succeed under the constitution
D. Slavery was a system that would eventually bankrupt the southern states.

Answer 1

B. It was a union of people not states.
C. The southern states lack the power to succeed under the constitution.