13 amendments - the United States Constitution abolished slavery and involuntary servitude, except as punishment for a crime., 14 amendments - the U.S. Constitution, ratified in 1868, granted citizenship to all persons born or naturalized in the United States , 15 amendments - The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of race, color, or previous condition of servitude.,

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