11 h 28 m, 11 abr 1869 año - Congress approves the 15th amendment. It barred all states from denying African Americans the right to vote " on account of race, color, or previous condition of servitude. " The amendment took effect in 1870, after three fourths of the states gave their approval.
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11 h 28 m, 11 abr 1869 año
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