I didn't. I learned it in the Union economic textbook which kept this system going so long as the right people were collecting the money.
You aren't getting this. The Union didn't despise slavery, they despised loss of control over the money.
They didn't fight a war to stop an evil, they fought it to perpetuate a different one, and ever since the Nation's destiny has been guided by whatever happens to be good for power brokers of New York and it's allied cities.
We call these people the "Establishment", and they rule Washington.
Where did I say that the Union despised slavery?