"For instance Libertarianism considers the Civil War, the War of Northern Aggression, immoral. Conservatives believe that this, and the subsequent federal Reconstruction /occupation of the surrendered South, was right and just, and that if supported instead of ended, Reconstruction would have stamped and snuffed out every remaining smoldering ember of that fire of slavery that burned in America, until President Lincoln put it out."
You have to run pretty far up the ladder of abstraction to make these assertions about the differences between Conservatives and Libertarians - that "Libertarianism considers the Civil War, the War of Northern Aggression, immoral. Conservatives believe that this, and the subsequent federal Reconstruction /occupation of the surrendered South, was right and just."
The difference in attitudes toward the "War of Northern Aggression.....and the subsequent federal Reconstruction /occupation of the surrendered South" depends upon when and where such attitudes were expressed. After the era of Political Correctness began and in the northern states who were part of the Federal Union in 1861-65 you get one attitude and before that era began and in states of the former Confederacy you get an opposite attitude.
In addition, history does not support the hypothesis that Lincoln's main goal and purpose in fighting the war of 1861-1865 was to end slavery. Had ending slavery been the primary purpose of the Lincoln Administration, Lincoln should have been much more cautious about making enemies of factions in the South who did not support slavery, such as the Scots-Irish who were part of the warrior class of the South, but who were not necessarily allied with the Southern Ruling Elite, the elite English, who supported slavery. Not all Scots-Irish opposed slavery, but many of them refused to own slaves because of their Christian morals..