My parents used to have an lp record with songs from the Civil War. I don’t remember much about the songs but there were pics of Lincoln, before and after. It always struck me how much difference there was. He aged so much and looked so sad at the end.
Blundering into a war that kills 600,000 of your countrymen and lays waste to half the country might have been the cause. Although I’m not sure he was ever sad about it.