State laws passed primarily in Southern states to restrict the voting rights of African Americans after the passage of the Fifteenth Amendment came to be known collectively as

After the Fifteenth Amendment prohibited denying the vote based on race, Southern states used measures such as poll taxes and literacy tests to keep African Americans from voting. These restrictions were part of the broader system of Jim Crow laws. Black Codes were mainly enacted earlier, after the Civil War, to restrict the rights and freedom of formerly enslaved people.

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