how did Eli Whitney 's invention of the cotton gin affect the cotton industry

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The invention of the cotton gin increased the need for slave labor. There were no automatic machines in the 18th century, so there was a need for people to operate the gins. On the upside, the work was more efficient. Before the cotton gin, the workers could not accomplish a lot in a day; the process consisted of picking each individual seed out of a cotton boll, which was tedious and time-consuming. After the cotton gin, workers could simply place cotton into the gin; it would do the rest.  

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