What strategy did the leaders of CORE use in northern cities to shame restaurants into serving african American customers?

Very useful. it is to learn because history repeats itself so learning about it those mistakes not happen again.

The question of what caused the full effects of the radical stage, also called the second french revolution by some historians, which shook the political and social reforms in france have caught the attention of many scholars, particularly because of principles implemented during this stage which is contradictory to the fundamental principle of the french revolution itself, by using dictatorship to create equality.

The answer would be a.