First they exploited the Black man and the Native American. The forced slaves to work their properties and stoled Native American lands by giving them worthless trinkets for it. Anytime anything of value was found on Native American land it was taken sometimes by force .Those people who once had a good living were placed on scrub land called Reservations where they could barely feed themselves.
The civil war caused a change but in reality it was a very small one. The south created new ways to exploit the black men and the poor there. Thy created share cropping with was in fact indentured slavery . They created company towns with company stores where the only money excepted was company script. Workers had to buy from the very companies that employed them and in most cases were overcharged .
The only light that finally came along was the formations of unions by groups of workers banding together they had the power to change working conditions and demand better pay. That light in this day and age has dimmed greatly. The exploitation of the past which never really ended is on it's way back.
It's not like business isn't exploiting 3rd world countries with substandard pay to people who will do anything to just get something. You think those workers in China get a decent wage or is most of the money going to their government. You think those workers in Mexico get a decent wage that lifts them out of poverty? Do any of the workers of those crooked business get a living wage?