Why did Segregation have such a hold on Southern America?

slaves were most prevalent in the south because of the amounts of plantations they had there. After the Civil War when slavery was made illegal segregation still had a hold there because people still thought of them as slaves. This segregation carried on for generations until it was ended in the 1960s.

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final

i'm asking the same thing i asked this other cat all of