Write a paragraph comparing an contrasting the north and south moving to the civil war and which region you believe had the advantage and why. I will reward Brainliest PLEASE HELP ME

Which effect did the united states supreme court's decision in plessy v. ferguson have? 1. ending segregation in all public schools in america 2. protecting voting rights for african americans by eliminating literacy tests 3. upholding the rights of all citizens to be treated equally by the government 4. authorizing the system that kept black and white people separated