Which amendment abolished slavery in the United States?

• A. 13th Amendment.
• B. 14th Amendment.
• C. 15th Amendment.
• D. 12th Amendment.

Answer: (A)

Abolishing slavery nationwide is accomplished by a constitutional amendment that bans slavery and involuntary servitude, except as punishment for a crime after conviction. This amendment was ratified after the Civil War and directly ends the practice across the country, making it the clear choice for this question. The other amendments expand rights—one addresses citizenship and equal protection, another protects voting rights regardless of race, and another reorganizes how presidents are chosen—but none of them abolish slavery itself.