What led to the American Civil War?

A. taxation without representation

B. Impressment of American sailors

C. slavery, sectionalism, states' rights

D. immigration from Germany, Ireland, and Mexico

c

Explanation:

The Civil War started because of uncompromising differences between the free and slave states over the power of the national government to prohibit slavery in the territories that had not yet become states ... The event that triggered war came at Fort Sumter in Charleston Bay on April 12, 1861