Why didn't desegregation happen quickly after the Brown v. Board of Education decision?

Powers of states the first letter of the answer is r.

What was the purpose of winston churchill’s “blood, toil, tears, and sweat” speech? a. to inform parliament about nazi aggression b. to inspire the british people to keep fighting the nazis c. to update parliament on what he had accomplished so far d. to convince parliament to go to war against nazi germany

•the impact of enlightenment ideals on the development of economic, political, and religious structures in the western world