Final answer:
Poll taxes were used to restrict voting rights in the United States, and they disproportionately affected certain groups, particularly African Americans. The Twenty-Fourth Amendment abolished poll taxes in federal elections.
Step-by-step explanation:
Poll taxes were used to restrict voting rights in the United States. Although the Constitution did not explicitly mention poll taxes, they were commonly implemented and had a disproportionate impact on certain groups, particularly African Americans. The Twenty-Fourth Amendment, ratified in 1964, abolished the use of poll taxes in federal elections, but some states continued to enforce them in state elections until 1966, when the Supreme Court declared them unconstitutional.