It's the angry boi
Countryhumans can have scars (I have decided, mostly because the look cool) and cracks. Cracks happen more when something is "crumbling". Like during the Civil War, America got one that goes across his eyes.
Meanwhile, scars are kinda rare because of how indestructible Countyhumans are. And if the do get scratches, they heal over in no time.
Scars can happen if it happens to do with something important. World events, fights between the countries, etc. all play a role. Dixie and America fought quite a bit. Dixie wasn't afraid to get nicked up.
Dixie has four scars (probably more). One small one on his right eyebrow, another going down right his eye, another on his right collarbone. The last one is from when America slayed him with his bayonet. It goes up his chest and stops at his heart, on the left side.
That was more information than u wanted, huh?