Answer:
Institutionalization of Jim Crowe laws and increased availability of manufacturing jobs.
Explanation:
After the return to power of white democratic leaders in the South during late XIX century, local government encated laws to limit the political participation of African-Americans and also to segregate them. At the same time, Northern and Western states opened a number of job positions, specially in the steelmaker industry, where this population saw a new opportunity to leave behind discrimination in the South.
Exodusters was a name given to African Americans who migrated from states along the Mississippi River to Kansas in the late nineteenth century, as part of the Exoduster Movement or Exodus of 1879. It was the first general migration of black people following the Civil War.
I think one should treat an unjust law should need a revolution. This is not because they are too selfish about it but this is because it is the right thing in which people should have a just law for them to be in a place where peace and order is important with the presence of the freedom and rights of each citizens.
There were several reasons actually. First of all, there was a war before. As it is well known, wars are very expensive. Soldiers needed to be equipped, soldiers need to be paid, etc. Then came the need to pay for heavy costs. Who to tax? For some reason the Colonies were chosen, perhaps as the war was quite literally fought by the colonies.