How did plessy vs. Ferguson change segregation in the united states?

Plessy v. Ferguson was important because it essentially established the constitutionality of racial segregation.

Explanation:

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 Brown vs Board

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.