What was the effect of segregation on businesses for african americans

How did the roaring 20s mark the end of the progressive era? a. mass production reduced wealth disparity and turned public opinion pro business b. labor unions won big legislative gains in workers rights and disbanded c. public officials cut taxes on businesses and reduced spending on services d. america increasing influence in world affairs redirected public attention to foreign policy

In one to two paragraphs, compare and contrast the american, french, and mexican revolution.

What was the main argument of plessy in plessy v. ferguson