In 1954, the Supreme Court case Brown v. Board of Education overturned Plessy v. Ferguson by ruling segregation unconstitutional.
stated that African American and white schools needed to be equal.
upheld the Separate Car Act by ruling that segregation was legal.
upheld Plessy v. Ferguson by ruling segregation constitutional.

What doctrine was established by the ruling in Plessy v Ferguson?

On May 18, 1896, the U.S. Supreme Court case Plessy v. Ferguson ruled that separate-but-equal facilities were constitutional. The Plessy v. Ferguson decision upheld the principle of racial segregation over the next half-century.

Explanation:

abolish

do away with

unanimous

in complete agreement

secede

separate; break free

inauguration

starting a new position with a formal ceremony.

cooperationist

people who wanted the north to cooperate with the south

surrender

to give up

volunteer

perform a service for free

draft

involuntary service in military

retreat

withdraw; move away from enemy

advisor

expert who gives advice

explanation: