Plessy v. Ferguson is a court case strengthened the Jim Crow laws. Over the subsequent 50 years, the Plessy v. Ferguson ruling upheld the fundamental idea of racial segregation.
Segregation established legal in 1896 when the Plessy v. Ferguson court declared that the "inherently unequal" law did not breach the 14th Amendment's assurance of equal treatment under the law.
Jim Crow laws, which were designed to keep races apart, were developed in many southern states.
Thus, option A is correct.
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