Which of the following is the best reason for why the Civil War did not completely end racial segregation in America?

a. The Thirteenth Amendment, which ended slavery, was not ratified until a decade after the war ended.

b. The Civil War era lacked the powerful, bold leaders that later generations had, such as Martin Luther King Jr.

c. Racial attitudes and policies had been a part of American life for a long time and were not going to change easily.

d. The Civil War mostly impacted the Southern states that seceded and formed the Confederacy: racist attitudes continued to
persist in the North.​