Which term describes the strong divide that was created between the north and south and led citizens to be loyal to the region in which they lived?

Sectionalism is strong loyalty to a particular region, often accompanied by conflict between regions. The growing divide between the North and South led people to identify with and support their own region, so the correct choice is sectionalism. Succession means one ruler or event following another; federalism divides power between national and state governments; nullification is the claim that a state can reject a federal law.

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