Final answer:
The major problem facing the North post-Civil War was the economic and political challenges stemming from the conflict and its aftermath.
Explanation:
One major problem facing the North after the Civil War was the economic and political challenges brought about by the aftermath of the conflict. The war had devastated the South, leading to the destruction of infrastructure like railroads, bridges, and factories, hindering economic recovery. Politically, questions arose on how to reintegrate the Southern states back into the Union and rebuild their governments amidst the social upheaval caused by emancipation.
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