Why north and south disagree on slavery?

The North and South disagreed on slavery primarily due to economic differences; the North was increasingly industrialized and favored free labor, while the South's economy relied heavily on slave labor for its agricultural output, particularly in cotton production. Additionally, moral and ethical views on slavery diverged, with many in the North viewing it as a moral atrocity and advocating for abolition, while many in the South defended it as a necessary institution for their way of life. These fundamental differences contributed to rising tensions that ultimately led to the Civil War.