>>>Didn’t [Lincoln] go to war rather than compromise on slavery?<<<
No. Lincoln didn’t give a rat’s behind about blacks of slavery, until the politics of war forced him to. In fact, he was a White Supremacist. His Emancipation Proclamation was not issued until 1863, almost 2 years after the war began, and it did not free a single slave. It was a political ploy to try to turn the tide of the war (which the North was losing).
“Do the people of the South really entertain fears that a Republican administration would, directly, or indirectly, interfere with their slaves, or with them, about their slaves? If they do, I wish to assure you, as once a friend, and still, I hope, not an enemy, that there is no cause for such fears.” The Collected Works of Abraham Lincoln edited by Roy P. Basler, Volume IV, “Letter to Alexander H. Stephens” (December 22, 1860), p. 160.