What were the long-term effects of the Plessy v. Ferguson case? Source:

Homer Plessy, a black man arrested for sitting in a whites-only railroad car in Louisiana, looked to the courts for help. Plessy argued that Jim Crow laws violated the equal protection clause of the Fourteenth Amendment. In1 896, his case, Plessy vs Ferguson, reached the Supreme Court. The majority of the justices ruled that segregation was constitutional as long as the facilities provided to blacks were equal to those provided to whites. This"separate but equal "doctrine was soon applied to almost every aspect of life in the South and endured well into the 1950s. However, the facilities set apart for African Americans in Southern states were seldom equal to those labeled "whites only."

Support the racial segregation under the separate but equal doctrine.

Explanation:

Homer Plessy was an African American who broke Louisiana segregation law by going in rail coach in 1896 that meant to be for  "whites only". His case was taken in the U.S. Supreme Court where Plessy questioned the Separate Car Act.

After the Plessy v. Ferguson case, the Supreme Court approved the segregation of cars, which resulted in the separate but equal law throughout the South. This policy allows the segregation of African Americans possible by keeping them away from White Americans.                                          

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most people were factory or company owners.