Answer:I know i'm kind of late, but the answer is- Secession
Explanation: I took the test.
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.
Its either that one or the last one...sorry I couldnt be more help :(
The answer is D, They did not set up an executive or judicial branch.