What U.S. war ended slavery?

What does this answer mean?

The Civil War ended slavery in the United States.

The war was fought from 1861 to 1865 between the Union in the North and the Confederacy in the South, and slavery was a central cause. During the war, President Abraham Lincoln's Emancipation Proclamation, issued on January 1, 1863, declared enslaved people in the Confederate states free, and it allowed Black men to serve in the Union Army and Navy.

The Union's victory made it possible to end slavery everywhere. Congress passed the 13th Amendment in January 1865, and it was ratified on December 6, 1865, after the main fighting had ended. It abolished slavery throughout the United States.

Two more amendments followed: the 14th, ratified in 1868, which defines who is a citizen, and the 15th, ratified in 1870, which protects the right to vote regardless of race. Both are the subject of other questions on the test.

At the interview, say "the Civil War."