Origins of Jim Crow -Black Codes
The link address is: https://www.khanacademy.org/humanities/ap-us-history/period-6/apush-south-after-civil-war/v/jim-crow-part-2
The link address is: https://www.khanacademy.org/humanities/ap-us-history/period-6/apush-south-after-civil-war/v/jim-crow-part-2