Question

following the passage of the fifteenth amendment, states attempted to limit voting rights of african americans through
registration quotas.
state constitutions.
poll taxes and literacy tests.
blood tests and genealogy.

Explanation:

The 15th Amendment prohibited denying voting rights based on race. Southern states used indirect, discriminatory methods to disenfranchise African Americans. Poll taxes required payment to vote, which excluded low-income Black citizens, and literacy tests were administered in a biased, unfair manner to bar them from registering.

Answer:

poll taxes and literacy tests.