Ratification of the 15th Amendment

Image from the U.S. National Archives and Records Administration / Public Domain
The House Joint Resolution Proposing the 15th Amendment to the Constitution, December 7, 1868.
The 15th Amendment to the U.S. Constitution (ratified in 1870) granted African American men the right to vote, declaring that 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."