The landmark civil rights case of brown v. board of education rendered invalid the decision in which supreme court case? board of regents of california v. bakke plessy v. ferguson roe v. wade gibbons v. ogden dred scott v. sandford

The answer is:

Plessy v. Ferguson

The landmar civil rights case of Brown v Board stated that racial segregation in school was unconstitutional.

i need the answer too man

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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