Grant was known as a softy when it came to scarring, abusing, or disfiguring slaves. He also didn't make all that much money, even as a general.
If you thought was bad, you must southern slave owners were truly garbage. Good for you. Married to a southern woman, Grant was much more southern than many think.
Please...Grant was a poor manager and business man. A failure at everything he attempted until Lincoln gave him a shot. He was not anti-slavery and slave owners did not mistreat domestic help which is what his wife owned.
In fact, your precious General Sherman states " The domestic slaves, employed by the families, were probably better treated than any slaves on earth"
It was all about money for Grant he had no deeply held views against slavery and was a serious bigot until the day he died if you judge him by today's morals. Which you continue to do to the Confederacy by the way.
The North does not now, or has ever had any superior moral claim on which to stand. Whether it was working poor children in forced labor or slaughtering Native Americans and seizing the land. There is blood enough to go around.
Get off of your high horse, slavery was wrong, I side with General Lee not Sherman or Grant. It was not the cause of the war and you have enough sins of your own to wash.