It's also easier to be wealthy if you free all the slaves in the South and don't free the ones in the North, as your Mr. Lincoln did.
Anyone can win a historical argument if they omit facts.
Lincoln had more power in the South due to the rebellion. We ended slavery up here soon after. If the North wasn't moving away from slavery prior to the Civil War as you seem to think, why did South Carolina's Declaration of Secession say that they were seceding to preserve slavery?