In 1860 Lincoln won the party's presidential nointion. Lincoln was in the National Union Party.
He moves toward ending slavery included the Emancipation Proclamation of 1863 Lincoln used the U.S. Army to protect escaped slaves encouraged the border states to outlaw slavery and pushed through Congress the Thirteenth Amendment to the United States Constitution
With Abraham Lincoln was against slavery and the success of the Republican Party to which he belonged in that election south Carolina seceded on December 20 . 1860.