The document discusses the Great Migration (1915-1930), highlighting the push-pull factors that influenced the migration of over 6.4 million African Americans from rural to urban areas in search of better opportunities and freedom from oppression. It details the impact of events such as World War I, natural disasters, and systemic racism on migration patterns, leading to significant demographic changes in cities like Chicago and Detroit. Additionally, it references notable individuals and cultural movements associated with the migration, such as the Harlem Renaissance.