Answer:
By passing Black Codes
Step-by-step explanation:
The Black Codes were bodies of laws established at the level of the state governments of the United States, as internal legislation, intended to put limits on the citizenship rights of the black population. These groups of norms were drafted and promulgated from of the decade of 1830, and they knew a true validity well into the twentieth century, when the Movement for civil rights in the United States caused its abolition.