Why was the union’s capture of vicksburg a turning point in the civil war? it divided the confederacy. it divided the union. it raised confederate morale. it led to a swift end of the war

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