Wrong! The end of the Constitutional Republic!
Actually, I believe that the 14th Amendment to the Constitution and the incipient decline in Stated rights was the most prominent aspect of the Civil War. Slavery would have ended within 30 years, e.g., the end of slavery (serfdom) in Russia.
The warping of the United States Constitution, however, might never have occurred had there been no impetus as the Restoration.
Not really. The calls for "reparations" for descendants of slaves is a modern political cause. By contrast, "revelations" about Lincoln's poor character and political abuses have been written of and documented since the war ended. Check out Lysander Spooner's book "No Treason" from 1870. Spooner, one of foremost abolitionists in the country prior to the war, denounced the war itself and those who waged it as tyrants for their destruction of self-government.
but what was the most prominent end result of the US civil war? The end of Slavery - right?
No. That was the most immediately visible political change from the war, but the most prominent result, which still effects us to this day, was the war's implications for the federal relationship and construct of government in the United States. The war altered the concept of federalism, and with it our entire government's evolution.