What were causes of sectionalism?

"Sectionalism was caused by the issue of states' rights to the slavery and personal treatment of slaves. Sectional strife was caused by the expansion of the peculiar institution into western territories. Initially most northerners ignored the issue of slavery as it had a minimal role in their everyday life."

Explanation:

payments were made after the 1940s.

in the 1980s, a commission held investigations and made recommendations.