Answer:
a. Lincoln was elected president
Step-by-step explanation:
The American Civil War or Secession War (separation) took place from 1861 to 1865. The reasons for this conflict lie in the discord between the northern industrial bourgeoisie, which did not accept the extension of slavery to the new lands of the American West, and the aristocracy. that wanted this extension and in customs tariffs.
The immediate cause of the war was the victory of the Republican Party candidate and Northern interests representative, Abraham Lincoln, in 1860. The northern victory occurred in 1865, leaving an estimated 600,000 dead, the devastated South and the consolidation of political interests. and economic in the northern region.