What contributed to the Great Migration during the Interwar period? a. African-Americans experience in Europe during WWI or in the 1920s showed black Southerners that the terror system that existed in the South did not exist everywhere. b. The growth of northern cities and growing urban prosperity of the 1920s presented opportunities for impoverished tenant farmers in the South faced agricultural disasters and declining crop prices. c. White supremacies groups, including the KKK, flourished in the post-WWI South. d. All of the above.
