Answer: C. African Americans
Step-by-step explanation:
The 15th amendment of the United States Constitution, which was ratified in 1870, granted the right to vote to African Americans. The amendment stated 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. This amendment was a significant step in ending racial discrimination and promoting equality in the US. Prior to the amendment, African Americans were often denied the right to vote due to racial segregation and discrimination. With the 15th amendment, African Americans were granted the right to vote and could participate in the political process on an equal basis.