Ah...so you would have rather allowed the South to leave and stay gone, thus destroying any chance of democracy ever catching on in Europe and changing the course of history forever? Got it!
And if you think I'm just making shite up, you're deluding yourself. Britain and France were actively cheering on the Confederacy throughout the conflict. Not because they thought the North oppressive or because they wanted cotton at cheaper the rates, but because they saw the United States as a direct threat to their imperial power. Divided, the United States wasn't much of a threat and probably would have eventually dissolved into multiple sovereignties, thus making North America resemble the map of Europe.
To not fight would have invited the destruction of the United States and further division of the Confederacy when states didn't like where the central government was steering the greater whole.
That is what Lincoln talked about in his Gettysburg Address. This wasn't just a fight over the future of a single nation, but the future of democracy itself.
This post was edited on 11/13 at 11:34 pm