Final answer:
The 24th Amendment, passed in 1964, eliminated poll taxes in federal elections, ensuring voting rights were protected.
Explanation:
The 24th Amendment, ratified in 1964, abolished the poll tax in federal elections. Poll taxes were used in the early 1900s to suppress poor people from voting, primarily in Southern states. This amendment effectively outlawed poll taxes, ensuring voting rights were not denied based on failure to pay such taxes.
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