Final answer:
The 24th Amendment abolished poll taxes in federal elections, removing financial barriers to voting. It was ratified in 1964 to protect citizens' right to vote.
Step-by-step explanation:
The 24th Amendment deals with the abolition of poll taxes in federal elections. Poll taxes were fees imposed on voters, often used as a way to discourage African Americans, particularly in the Southern states, from voting. The amendment, ratified in 1964, prohibited the use of poll taxes in federal elections, ensuring that citizens' right to vote was not hindered by financial barriers.