How did the ruling in Plessy v. Ferguson affect the legalities of segregation?

In Plessy v. Ferguson (1896), the Supreme Court upheld racial segregation under the “separate but equal” doctrine. This ruling made segregation legally permissible when facilities were claimed to be equal, establishing a legal precedent. Choice B states this effect; the Court did not implement desegregation or rule that racial separation could never be equal.

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