They were all inhabited by tribes in various stages of barbaric culture.
You are, of course, primitives from a primitive and barbaric culture, so simple and direct methods would undoubtedly serve best.
Freeman stated that the Aztecs were "the most barbaric culture in all of human history".
It's absurd for some people to claim that Islamic culture is a barbaric culture.
But surely a barbaric culture is a viable one?
The novels being reprinted in the 21st Century when there was a certain "fascination" with barbaric pre-technical cultures then.
It has a barbaric culture, which is also irrational and sexist.
The latter are a barbaric, nomadic, tribal culture with many parallels to American Indians.
The Vedas were considered by some to be composed by a barbaric culture worshiping violent Gods.
The natives of the planet appear human, with deceptively primitive-looking technology and a barbaric culture, which satirically resembles that of humans.