No idea, it seems a bit to complacted can you try and split it down
Slavery developed largely because there were great needs for production which couldn't be paid by the people who owned slaves. They needed to have workers which would work for them at the same time they couldn't afford to pay this mass of people.
It developed differetly in the parts that are mentioned here because they had different needs at the time.
At the time, America was in The Great Depression, and most women were unemployed(around 10 million). They received lower pay if they worked, and were often expected to stay at home.