Nbrown v. board of education, who instigated the lawsuit? the students the teachers the parents the schools

The correct answer is "the parents".

Brown v. Board of Education was a case that led to the enactment of a landmark decision by the US Supreme Court in 1954.  

The case was about the constitutionality of the "separate but equal" lemma that was accepted in a former decision enacted by the US Supreme Court in 1896 in the Plessy v. Ferguson case. Such decision allowed the proliferation of segregated schools under the belief that, if facilities were equal in quality, such education system was not violating the equality of rights provision that had been guaranteed for all US citizens by the Reconstruction Amendments to the US Constitution.  

The original lawsuit was undertaken by the Brown family, a family of black US citizens from Topeka (Kansas), because they were oblied to enroll their daugther in a school just for blacks where she needed to go by bus, instead of being able to attend the public school that was closest to their house.

Brown v. Board of Education overturned the abovementioned previous Supreme Court decision and declared segregation unconstitutional, claming that, in practice, it actually made black students feel inferior. The court published a deadline and all public schools nationwide had to abolish such practice and to adopt racial integration.

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