Question

the united states abolished slavery by passing the 13th amendment in 1807. 1833. 1848. 1865.

Explanation:

The 13th Amendment to the U.S. Constitution, which abolished slavery, was ratified in 1865, following the end of the American Civil War. The other listed years correspond to other anti-slavery actions: 1807 was the ban on the transatlantic slave trade, 1833 was the British abolition of slavery, and 1848 was the end of slavery in many European countries.

Answer:

1865.