The African American population of cities in the northern states during the .?

During the Great Migration, which began in the early 20th century, a significant number of African Americans moved from the rural South to northern cities in search of better economic opportunities and to escape Jim Crow laws. Cities like Chicago, Detroit, and New York saw substantial increases in their African American populations, leading to the formation of vibrant communities and cultural movements, such as the Harlem Renaissance. This demographic shift not only transformed urban landscapes but also contributed to the broader civil rights struggles in the northern states. The impacts of this migration are still evident today in the social and cultural fabric of these cities.