I'm sorry, I fail to see how that resolution would be recognizably altruistic from a modern perspective. Had Abraham Lincoln "saved" the Union without freeing any slaves, there would have been no philanthropic regard for others, it would have instead been the government capitulating to monied interests. That Abraham Lincoln was willing to sacrifice an altruistic and noble outcome for political expediency shouldn't detract from the actual good freeing the slaves wrought.

To be fair, I'm a consequentialist, we might be arguing morality at cross-purposes.