It also stopped them from importing new slaves from Africa as they certainly would've done down the line.

Britain had a blockade on Africa. Not to mention, other European powers were already in the process of carving up the continent for themselves.

Lincoln also wanted to send the blacks back to Africa and started steps towards debt-free money creation via the greenback. This infuriated the banking establishment as well.

It's sounds like pie in the sky, Bernie Sanders type of wishful thinking and promises.

Prior to the war, there was already plans to send them back via the founding of Liberia. Yet only a couple thousand Blacks had actually went there, out of the hundreds of thousands who were still in America.