Final answer:
The Supreme Court's ruling in Plessy v. Ferguson reinforced segregation and inequality for African Americans but was later challenged and overturned in the Brown v. Board of Education case.
Explanation:
The Supreme Court's ruling in Plessy v. Ferguson had a significant impact on the lives of African Americans by reinforcing the doctrine of "separate but equal," which allowed for racial segregation in public facilities. This ruling led to legalized segregation and inferior facilities for African Americans, contributing to feelings of inferiority and inequality. However, this decision was later overturned in the Brown v. Board of Education case, which emphasized the necessity to end segregation and integrate public schools.
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