[tsunamifury]

I’m curious how that’s different from the Native Americans who, regardless of their Nobel savage portrayal in media, were constantly at war with each other yet failed to develop any weapons nearly powerful enough to repel the Europeans.

[nurbl]

As I remember it, a major thesis of the book (which I recommend, it's a fun read!) is that Europeans had the benefit of several, mainly geographical factors. This was just one of them.