Which phrase did state leaders who were opposed to integration use to drag out the process of desegregation?

"separate but equal"

Explanation:

This was a phrase used by state leaders who wished to maintain segregation in a masked but still influential way. They encouraged the creation of spaces where blacks and whites remained separate, but spaces for blacks (such as schools, for example) would have a quality exactly the same as spaces for whites. In this way, they believed that they would leave blacks satisfied and populate whites to live with them.

Answer and Explanation:

Separate but equal is the phrase which had played America. This phrase had been used by the people who were against the process of disintegration. However, it marked this phrase and said Separate means unequal.  This doctrine provided the base of racial segregation.

The public schools violated the Protection Clause; thus, the Supreme Court sorted this issue in terms of Brown v. Board of Education. Colored students, according to this decision, would no longer be forced by the law to attend black-only school.

This case brought out by the NAACP on behalf of school children and their families. In the case they described the schools' situation, buildings of schools are no more than the dilapidated old building, it did not contain any cafeteria, gym, offices, and restrooms. Moreover, the school is over-crowded.

So the Supreme Court stroked down the segregation in public school by initiating the Civil Rights movement.

a drastic rise in oil prices ended decades of postwar.