Which two issues played the GREATEST roles in causing the Civil War?

Question

Which two issues played the GREATEST roles in causing the Civil War?

Responses
A slavery and states' rightsslavery and states' rights
B Manifest Destiny and Indian RemovalManifest Destiny and Indian Removal
C the Missouri Compromise and the California Gold Rushthe Missouri Compromise and the California Gold Rush
D the election of James K. Polk and the Northwest Ordinance

Answer 1

Which two issues played the GREATEST roles in causing the Civil War?

A slavery and states' rights are the correct answer as they were the main causes of the Civil War.