You're talking about the immediate reason, he was looking at the root reason.
Why did the Union army free the slaves? Because of the conscience of the 'northern abolitionists'
Please explain how saying slavery was wrong supports the 'lost cause of the Confederacy'
I know you desperately want to believe that, but sorry, it just makes you look moronic
Oh, so DeMint deliberately denied the role of big govt in the process, which is what I said in the first place. In the process, he claims that it was the ideals of the Constitution that led people to believe slavery was wrong, when in fact, the Constitution specifically endorsed slavery.
The Lost Cause is a complex mythology of denial, the central tenet being that the Civil War wasn't about race based slavery but rather about anything else. It sidesteps the issue entirely. All the references to the goodness in people's hearts & their love of God waltzes the listener away from the lack of such qualities among slave owners & the inherent evil of a racist slave based economic system. It ignores the racist Bible based rationale for southern slavery entirely, and so does DeMint.
If it was all about goodness of the heart & love of God, Jim Crow wouldn't have existed for 100 years.