What was the time span from the first recorded conflict to the last? Were there periods of peace? Non American here, watching Westworld and curious about the history.
In a quite real sense, "were" isn't a useful word to use here, because the genocidal actions of the United States against native groups, and the ongoing legacy of settler colonialism, have powerfully affected native communities and do so even today. Quite a bit more can be said here, but these posts from u/snapshot52 cover the topic of genocide and conflict with United States governments:
And