" It also became apparent how inextricably this quasi-slavery of the twentieth century was rooted in the nascent industrial slavery that had begun to flourish in the last years before the Civil War. The same men who built railroads with thousands of slaves and proselytized for the use of slaves in southern factories and mines in the 1850s were also the first to employ forced African American labor in the 1870s. "

― Douglas A. Blackmon , Slavery by Another Name: The Re-Enslavement of Black Americans from the Civil War to World War II