The one that comes to mind is the discussions of the two World Wars. When I left high school, I basically believe that both of them were basically good vs evil stories, where Europe was sucking at stuff and then America showed up and defeated the bad guys. My history classes basically ignore WWI only to say that a bunch of people died in trenches and then America showed up. WWII, the British and French were losing, and then America showed up. What's an Eastern front? Normandy. America is awesome. The end.