Question

Why was slavery a major issue of concern between the federal and state governments in the 1800s leading up to the Civil War?

Answer 1

The main catalyst for secession was slavery, especially Southern political leaders' resistance to attempts by Northern antislavery political forces to block the expansion of slavery into the western territories. The South had been using slaves to aid the war effort. Black men and women had been forced to build fortifications, work as blacksmiths, nurses, and laundresses, and to work in factories and armories.

Step-by-step explanation:

there u go !