It really is culture and not race.
“Race” is a pretty recent construct, based on evolutionary/Darwinist assumptions.
It is true that the people groups tend to look alike, but that is more because they adapted to their locales, not because they are “more evolved” or “closer to gorillas” (as Darwin stated).
And, of course, these groups all developed their common cultures as well,
so there is a correlation between a people’s phenotype and their culture,
but it isn’t a “causation”.
Just because you have a certain skin color or eye shape does not predetermine your culture.