Which amendment abolished slavery in the United States?

The Thirteenth Amendment to the United States Constitution is the correct choice as it explicitly abolished slavery and involuntary servitude in the United States. Ratified in 1865, this amendment marked a pivotal moment in American history, recognizing the fundamental right to freedom for all individuals and laying the groundwork for further civil rights advancements.

The Fourteenth Amendment, ratified in 1868, addresses citizenship rights and equal protection under the law, while the Fifteenth Amendment, ratified in 1870, protects the voting rights of African American men, making it illegal to deny the right to vote based on race. The Nineteenth Amendment, ratified in 1920, extends the right to vote to women. Each of these amendments played a significant role in American civil rights, but it is the Thirteenth Amendment that directly addressed and abolished the institution of slavery.