Of the many myths told about American slavery, one of the biggest is that it was an archaic practice that only enriched a small number of men.
The argument has often been used to diminish the scale of slavery, reducing it to a crime committed by a few Southern planters, one that did not touch the rest of the United States. Slavery, the argument goes, was an inefficient system, and the labor of the enslaved was considered less productive than that of a free worker being paid a wage. The use of enslaved labor has been presented as premodern, a practice that had no ties to the capitalism that allowed America to become — and remain — a leading global economy.
But as with so many stories about slavery, this is untrue. Slavery, particularly the cotton slavery that existed from the end of the 18th century to the beginning of the Civil War, was a thoroughly modern business, one that was continuously changing to maximize profits.
To grow the cotton that would clothe the world and fuel global industrialization, thousands of young enslaved men and women — the children of stolen ancestors legally treated as property — were transported from Maryland and Virginia hundreds of miles south, and forcibly retrained to become America’s most efficient laborers. As they were pushed into the expanding territories of Mississippi and Louisiana, sold and bid on at auctions, and resettled onto forced labor camps, they were given a task: to plant and pick thousands of pounds of cotton. Link