the Supreme Court ruled that the separation of races .... racial discrimination reinforced by the federal government's actions and policies
The asnwer is C. They didn't have right to work laws in the south at the time. Businesses didnt pay everyone fairly if at all.
Some push factors were the chance to get rich, Dry farming, owning land, escaping the nightmares of the south ( slaves ). There were also longhorns to sell. Some pull factors were relatives and spouses not wanting them to go.