How did the Supreme Court decision in Dred Scott v. Sandford increase sectionalism?

Question

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

Answer 1

D. It denied Congress the power to regulate slavery in the territories.