What were three differences between North and South that caused animosity between
the regions?

North was antislavery; South was pro-slavery. North was business and trade oriented; South was agrarian. ... They wanted slavery to end in all of the United States.

Explanation:

popular sovereignty   influenced the declaration of independence because the colonists wanted to have freedom to do they wanted so they put into writing

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.