http://www.biography.com/tv/classroom/harlem-renaissance
The end of the American Civil War in 1865 ushered in an era of increased education and employment opportunities for black Americans. This created the first black middle class in America, and its members began expecting the same lifestyle afforded to white Americans. But in 1896, racial equality was delivered a crushing blow when the Plessy v. Ferguson Supreme Court case declared racial segregation to be constitutionally acceptable. This created even harsher conditions for African-Americans, particularly in some Southern states that sought to minimize the equality that former slaves and their descendants might aspire toward. The South also became gradually more and more economically depressed as boll weevils began to infest cotton crops. This reduced the amount of labor needed in the South.
This Explais How the Harlem Renaissance came about. Because of an economic depression in the South after the Civil War, African Americans began to head to Northern United States. Furthermore, this was also an added bonus for them, as the North offered the right to vote, which also pushed many African Americans to migrate to the North
