The Union soldiers in the battle actually fought against self-determination; it was the Confederates who fought for the right of people to govern themselves."
The Confederate slavemasters were fighting for self-determination? Just the opposite. They were fighting for slavery, not just for blacks, but for poor whites.
The Founding Fathers certainly did not believe in any right of secession from the Union. Even Robert E. Lee, respectful of the Founders, was horrified by secession.
It is correct that some northern Democrats and even some Republicans wanted to let the Confederates go, but they were greatly outnumbered by Unionists. The Federal war effort would not have succeeded otherwise. Likewise, there were many southern Unionists who had no use for slavery. Every southern state except South Carolina had units in the US Army.
When someone with the stature of Walter Williams pens such, regarding it as "nonsense" calls ones own faculties into question.
This is not the first lost cause foolishness WW has penned.
He’s embracing the Constitution and the Constitutional Convention in 1787 you idiot.