(Please help) During the civil war, how did the cultural and Economic differences in the north and south lead to tensions?

For years, textbook authors have contended that economic difference between North and South was the primary cause of the Civil War. The northern economy relied on manufacturing and the agricultural southern economy depended on the production of cotton. The desire of southerners for unpaid workers to pick the valuable cotton strengthened their need for slavery. The industrial revolution in the North did not require slave labor and so people there opposed it. The clash brought on the war.

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