Answer:
Below
Step-by-step explanation:
Before the Civil War, and for a short time after, sectionals was extremely present. In perhaps its most infamous manner - slavery and the restrictions put on black people all across the country. These restrictions forced several marginalized groups into small areas and forced them to bind together for protection.
In another example - petty sectionalism in the context of religious belief. The US was divided for hundreds of years by religion, which meant that the Union itself often fought over religion and religious values. Protestants in New England, Catholics in the south, and several other groups strewn throughout the regions.