Final answer:
The Twenty-Fourth Amendment abolished poll taxes in federal elections, removing a major barrier to voting for poor African Americans.
Step-by-step explanation:
The Twenty-Fourth Amendment, ratified in 1964, had a significant historical impact on Americans by abolishing poll taxes in federal elections, which were used to prevent poor African Americans from voting. This amendment removed a major barrier to voting and ensured that poverty would no longer be an obstacle to participating in the democratic process. The ratification of this amendment was a crucial step toward protecting African Americans' right to vote and promoting equality in the United States.
Learn more about The historical impact of the Twenty-Fourth Amendment on Americans