What would have happened in 1818 if missouri had joined the union as a slave state?
a no other territory would have been granted statehood.
b the balance of power in congress would have shifted.
c states in the north would have been forced to legalize slavery.
d there still would have been fewer slave states than free states.

Correct answer choice is :

In an attempt to maintain the stability of power in Congress between slave and free states, the Missouri Compromise was declared in 1820 indicating Missouri as a slave state and Maine as a free state. Controlled as a province of Massachusetts since 1647, the appearance of Maine as a free state was admitted to by Southern legislators in exchange for the entrance of Missouri as a slave state.

answer: secession

secession, as it applies to the outbreak of the american civil war, comprises the series of events that began on december 20, 1860, and extended through june 8 of the next year when eleven states in the lower and upper south severed their ties with the union. the first seven seceding states of the lower south set up a provisional government at montgomery, alabama. after hostilities began at fort sumter in charleston harbor on april 12, 1861, the border states of virginia, arkansas, tennessee, and north carolina joined the new government, which then moved its capital to richmond, virginia. the union was thus divided approximately on geographic lines. twenty-one northern and border states retained the style and title of the united states, while the eleven slave states adopted the nomenclature of the confederate states of america.

explanation:

b. they tried to evict the squatters from the area.

so sorry if wrong