The money northern banks made on the slave trade flowed from the south to the north and back south again. I never defended bankers, Southern or Northern. I believe in the Union. In one great nation, The United States of America, my home and the greatest country on Earth. I believe slavery was and is evil and I firmly believe the South fought a war to preserve it.
And what you aren't grasping is the fact that the North fought a protectionist war to preserve the profits they made from it.
They were going to leave the slaves in bondage.
They only changed their mind when it had gone too far for them to get away with that.