States rights is the issue was central to the conflict between the North and the South during the decades leading up to the Civil War. Hence, option B is correct.
What was the conflict of states rights?
State rights were a significant topic. In order to remove laws they disapproved of, especially those that limited their freedom to keep and transport slaves as they wanted, the Southern states intended to impose their dominance over the federal government. Another factor was territorial expansion.
At the start of the Civil War, states' rights served as a rallying cry for Southerners to back the Confederate cause, but the demands of the struggle forced political and legislative leaders to compromise on their high goals.
Thus, option B is correct.
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