in my experience, the history was divided into two parts, before and after WWI

We briefly went over how much of an asshole we were to the natives, but I think at most it was only a few chapters, maybe a unit.

WWI, WWII, and the Cold War each got their own unit. But the Korean and Vietnam Wars were barely mentioned. We of course we're taught they were proxy wars, and Korea has their stalemate thing, but that's all.

Currently I'm taking a class called 60's Literature, and this class is the first I'm actually hearing about the Vietnam War. And wow that was a clusterfuck.

Tldr: it seems like we don't really go over the negative parts at all. We mention the bad parts in a paragraph or two, but it's up to the student to actually figure out what happened