In what year did the 13th Amendment become law?

The 13th Amendment to the United States Constitution, which abolished slavery and involuntary servitude, became law in December 1865. The process of amending the Constitution required the proposal of the amendment by Congress, which occurred in early 1865, followed by ratification by the states. By December of that year, enough states had ratified the amendment for it to be officially adopted. This monumental step marked a significant change in U.S. history, reflecting the victory in the Civil War and the changing views on human rights and freedom in the United States.

The other years listed in the choices do not correspond to the adoption of the 13th Amendment, as the events surrounding the end of the Civil War and subsequent ratification in 1865 were pivotal in its implementation.