Final answer:
White supremacy was maintained after the Civil War through the implementation of Jim Crow laws, voter suppression, and racial segregation. The correct option is A.
Step-by-step explanation:
Three ways white supremacy was maintained after the Civil War were through the implementation of Jim Crow laws, voter suppression, and racial segregation. Jim Crow laws were state and local laws that enforced racial segregation, especially in the Southern United States. These laws mandated the separation of public facilities and promoted racial discrimination.
Voter suppression tactics were used to restrict African Americans from exercising their right to vote. This was achieved through literacy tests, poll taxes, and other discriminatory practices.
Racial segregation was another way white supremacy was maintained. African Americans were systematically confined to separate and inferior facilities, such as schools, transportation, and public spaces, as mandated by Jim Crow laws.