This is a view that is way too self-flagellatory and incorrect if you actually use the map. The borders are included based on what sources are available and non-european entitities are documented longer than european ones, as long as they have left behind anything to base these borders on. When no definite borders can be traced, the map still offers names of dominant cultures in the region, in the same way whether they're, say, european Celts or south american Paracas.