Final answer:
Eli Whitney's invention of the cotton gin revolutionized cotton production in the U.S. by significantly increasing efficiency.
Explanation:
Eli Whitney revolutionized cotton production in the U.S. with his invention, the cotton gin, in 1793. The cotton gin made it possible to process cotton much faster by efficiently removing seeds from the cotton fibers. This invention led to a significant increase in cotton production, propelling the American South into a dominant position in the global cotton market.
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