Lincoln married into a slave holding family and expressed the racist beliefs of his era when referring to African Americans. To sanctify him is propaganda.

Slavery was ended in ever other western nation by legislation. The Civil War was a bloodbath that had fleeting connections to slavery if any. Like all wars it was about money and power. Over 80% of government revenue came through the port of New Orleans in the form of customs. If the South seceded that revenue would have been cut off. Slavery would have collapsed under the weight of its immorality.