Allow me to add Elfquest, Cerebus the Aardvark, TMNT, Love and Rockets, and R. Crumb! Not sure if all of those are American or not, but a few of the non-superhero books I (as an American) grew up with.
Of course none of them was ever that widely known (apart from TMNT after it stopped being a comic), so the original point about the US and superheroes certainly remains.
Of course none of them was ever that widely known (apart from TMNT after it stopped being a comic), so the original point about the US and superheroes certainly remains.
I imagine it's partly due to the legacy of the CCA [http://en.wikipedia.org/wiki/Comics_Code_Authority].