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In page Greenwood, Mississippi:

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Thousands of slaves were transported as laborers to Mississippi from the Upper South through the domestic slave trade, in a forced migration that moved more than one million slaves in total to the Deep South to satisfy the demand for labor. Cotton cultivation was developed in these new territories of the Deep South. Greenwood continued to prosper, based on slave labor on the cotton plantations and in shipping, until the latter part of the American Civil War.