http://www.ourdocuments.gov/doc.php?doc=44

                     Above picture is the primary document of the Fifteenth Amendment to the United States Constitution, in which it prohibits any state and federal governments from denying any citizen the right to vote based on their “race, color, or previous condition of servitude.” According to the textbook “Give Me Liberty”, this amendment was first approved  in February 1869.  It was ratified on February 3, 1870. Fifteenth Amendment not only gives every citizen in the United States a right to vote but also it ended the segregation of blacks. “With the Fifteenth Amendment, the American Anti-Slavery Society disbanded, its work, its members believed, now complete.” (Give Me Liberty: 540)

                        However, this amendment did not give the voting rights to women, it only granted African American the right to vote. Fifteenth Amendment is the third of the Reconstruction Amendments. It contains two sections:

Section 1.
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–

Section 2.
The Congress shall have the power to enforce this article by appropriate legislation.

 Sources:

http://www.archives.gov/national_archives_experience/charters/constitution_amendments_11-27.html