Well let's just say the period immediately predating the European invasion, that generally occurred starting around the 1600s in North America. Of course this i

Well let's just say the period immediately predating the European invasion, that generally occurred starting around the 1600s in North America. Of course this isn't static but the perspective is important because a lot of displacement occurred post contact with Europeans and a lot more warfare and disease resulted. The perspective this map provides could be compared to a post contact map of tribes to highlight the many migrations that occurred.