contestada

How did the Missouri Compromise (1820) affect the expansion of slavery into western territories?
A.
It allowed slavery in Missouri and western territories south of 36-30 line.
B.
It permitted Missouri to have slaves under the principle of popular sovereignty.
C.
It forced Missouri to be a free state but permitted western states to choose slavery.
D.
It allowed all western areas to become slave states as long as they did not outnumber free states.