The ______Amendment ensured all citizens the right to vote regardless of race, color, or previous condition of servitude.

13th
14th
15th

The correct answer is the 15th Amendment. This amendment, which was ratified in 1870, ensured that the right to vote would not be denied or abridged on the basis of race, color, or previous condition of servitude. It was enacted to protect the voting rights of African American men who were previously enslaved and therefore excluded from participating in the democratic process. To find the answer to this question, one could refer to U.S. constitutional law or history resources, such as textbooks, online databases, or official government websites.