Manufacturing is the answer
I believe that desegregation of schools did work. Desegregation is the process of ending the separation of groups. This specific question is referring to race, and while there is still racism any race can attend whatever school they want.
you can justify your answer by giving backup evidence, imagine a factory opened, and you have to write about it, and nobody else beleives you that it opened. you find a newspaer with the factory opening and thats how you justify
The "separate but equal" doctrine