The Republicans abolished slavery. None of your twisting and cherry picking of historical data can refute that.
The Republicans were not for the abolition of slavery. Abolitionists were in a tiny minority in the North. Neither Secession nor the war were "about" slavery. None of your PC Revisionism can change that.
The Liberal big city Republicans who believed in massive government power and control, taxing and spending, protectionism and everything else modern Liberal Democrats believe in, killed 750,000 people in order to keep control of economic power for the established corruption cabal in the North east. And incidentally they abolished slavery as an afterthought.
Their goal was to keep slavery just as it was for the first two years of the war, so stop lying about their motivation. Their motivation was to keep the money and leave the slaves exactly where they were.