He has been the chief of his tribe for 35 years.

The dictator forced the tribe to agree on the terms of surrender.

Imagine, for the sake of argument, a tribal group in which mother-son incest was countenanced.

Those tribes inhabit the desert all year round.

That tribe worships its ancestors.

Members of that tribe settled along the river.

Members of the tribe settled down along the river.

These men are the wisest people of the tribe.

The tribe worships its ancestors and speaks its own language, and speaks an unfamiliar language.

Three missionaries were killed and eaten by cannibals.