Respuesta :
Answer:
A) Northern and Southerners disagreed over the spread of slavery.
Explanation:
"What led to the outbreak of the bloodiest conflict in the history of North America? A common explanation is that the Civil War was fought over the moral issue of slavery. In fact, it was the economics of slavery and political control of that system that was central to the conflict. A key issue was states' rights."
A) Northerners and Southerners disagreed over the spread of slavery.
That was the main reason the Southern states wanted to leave the Union. The Southern landowners wanted the slaves to provide free labor to make more money off of the cotton and other plants they were growing.
That was the main reason the Southern states wanted to leave the Union. The Southern landowners wanted the slaves to provide free labor to make more money off of the cotton and other plants they were growing.