How did the Missouri Compromise impact the future of North-South relat

How did the Missouri Compromise impact the future of North-South relations in the United States?

a. It put off major conflict to a future time.
b. It resolved major North-South conflicts about slavery.
c. It increased North-South conflict about slavery.
d. It changed North-South conflict from diplomatic to violent conflict.
e. It changed the source of North-South conflict from economics to slavery.

ANSWER
A