The bown v board education address issue

 Brown V the board of education declared that segregating children in schools but giving them "equal" opportunities was unconstitutional since the "equal" opportunities didn't really exist. This basically means the white schools were much nicer than the black schools, not giving equal opportunities to all children.

because mexico wanted to choose a centralized location

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."