4. What were the effects of Plessy Ferguson and Jim Crow Segregation

Explanation:

Plessy v. Ferguson was important because it essentially established the constitutionality of racial segregation. As a controlling legal precedent, it prevented constitutional challenges to racial segregation for more than half a century until it was finally overturned by the U.S. Supreme Court in Brownv..

d. dr. francis collins

b.unemployment reached nearly 25 percent.