Following the passage of the Fifteenth Amendment, which states attempted to limit voting rights of African Americans through poll taxes and literacy tests? northern states southern states some northern and southern states all states

The correct answer is Southern states.

Poll taxes and literacy tests were the southern states response to the newly passed 15th amendment, which gave African-American men the right to vote. To stop this from happening, southern states made citizens pay a tax (aka a fee) to vote and made them take extremely difficult literacy tests. States that used these tactics include Florida, Alabama, Arkansas, and South Carolina.