I think you mean Plessy v. Ferguson....but that was the being of segregation
[the legal one] while Jim crow was the way of life [the illegal one]
The correct answer is B. The case Plessy against Ferguson (1896) is a legal decision in the jurisprudence of the Supreme Court of the United States in which it was decided to maintain the constitutionality of racial segregation even in public places (especially in railway networks) under the doctrine of «Separate but equal».
Which king today was ruled of the longest time without
Yes this is right what is the question you’re asking
