How did the Supreme Court discuss in Dred Scott V Stanford increase sectionalism

A) citizenship to African-Americans
B) It allowed Congress to prohibit slavery west of the Mississippi River
C) It denied Congress the power to regulate slavery in the territories
D) It all questions regarding slavery up to the executive branch

C) It denied Congress the power to regulate slavery in the territories

The Supreme Court's decision in Dred Scott v. Stanford increased sectionalism by denying Congress the power to regulate slavery in the territories. This decision fueled tensions between the North and the South over the expansion of slavery into new territories, ultimately contributing to the growing divide between the two regions.