By 1860, what percentage of the world's supply of cotton was produced in the southern United States?

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By 1860, the southern United States produced approximately 75 percent of the world's supply of cotton, making it a dominant force in the global economy. The reliance on cotton and the profitability of the cotton trade were major factors in the South's economy and ultimately contributed to the tensions between the North and South leading up to the Civil War.

By 1860, What Percentage of the World's Supply of Cotton