How is 20th century African American migration different from 19th century?

20th century African American migration, particularly the Great Migration, was primarily driven by the search for better economic opportunities and escape from Jim Crow laws in the South, leading to significant urbanization in northern and western cities. In contrast, 19th century migration was largely influenced by the aftermath of the Civil War and the pursuit of freedom, with many African Americans moving in search of land and stability during Reconstruction. Additionally, the scale and organization of 20th century migration were more pronounced, with established networks and communities forming in cities like Chicago and Detroit. Overall, while both migrations sought improved conditions, their contexts and motivations differed significantly.