After Black slavery there was Black WAGE SLAVERY as described by Karl Marx back in 1848

I remember in a high school history class in Providence , Rhode Island ( circa 1965 ) that the Civil War did not break out immediately after Northern abolitionists had a heartfelt conviction that slavery was EVIL . There was the issue of UNION . WOKE WARRIOR Democrats are very sanctimonious on the long past issue of Black slavery. When the Southern Black slaves were finally FREE the Northern capitalists embraced them with what Karl Marx way back in 1848 accurately described as WAGE SLAVERY .