Final answer:
The problem that led to the Civil War was a combination of slavery, economic reasons, and states rights.
Step-by-step explanation:
The problem that led to the Civil War was a combination of slavery, economic reasons, and states rights. Slavery was the primary cause as it created deep divisions between the northern and southern states over the moral and economic implications of slave labor. Economic reasons also played a significant role, as the industrialized North and agricultural South had diverging economic interests and concerns. Lastly, the issue of states rights intensified the conflict, with southern states asserting their right to secede and maintain their own laws and institutions.
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