What was the moral cause of the civil war?

The moral cause of the Civil War primarily centered around the issue of slavery and its expansion into new territories. Abolitionist movements highlighted the ethical implications of human bondage, arguing that slavery was a violation of fundamental human rights. The conflict between pro-slavery and anti-slavery factions ultimately underscored a profound moral divide in American society, leading to the war as a means to resolve these deep-seated ethical and humanitarian concerns.