22 agos 1864 año - 13th Amendment
Descripción:
 Abolished slavery and involuntary servitude, except as punishment for a crime. In Congress, it was passed by the Senate on April 8, 1864, and by the House on January 31, 1865. The amendment was ratified by the required number of states on December 6, 1865. 
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22 agos 1864 año
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 ~ 161 years ago