Which best describes the effects of the new technologies of the 1830s, including the Deere plow, the cotton gin, and the McCormick reaper?

The Deere plow made it easier to break tough prairie soil, the cotton gin sped up cotton processing, and the McCormick reaper made harvesting grain faster. Together, these technologies let farmers produce more crops with less labor, increasing agricultural productivity and efficiency. They did not primarily improve transportation or reduce the amount farmers could sell.

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