Hi there!

Plessy v. Ferguson ruled that "Separate but equal" public facilities were constitutional, thus permitting the practice of segregation under Jim Crow laws in the South and separate facilities for African Americans.
Therefore, the correct answer is C, that the decision allowed Southern states to legally segregate facilities and institutions.
Answer:
The answer should be B, I might be wrong.
The answer is North Africa and Ethiopia.
I know why we have cabinets today is to have advisors who are experts in their fields assisting him so I would say it was the same back then. Hope that helps!