We find tribes within tribes, and cutting across other tribes. Offering no useful distinctions, tribe obscures many. As a description of a group, tribe means almost anything, so it really means nothing. If by tribe we mean a social group that shares a single territory, a single language, a single political unit, a shared religious tradition, a similar economic system, and common cultural practices, such a group is rarely found in the real world. These characteristics almost never correspond precisely with each other today, nor did they at any time in the past.
Tribe promotes a myth of primitive African timelessness, obscuring history and change.
The general sense of tribe as most people understand it is associated with primitiveness. To be in a tribal state is to live in a uncomplicated, traditional condition. It is assumed there is little change. Most African countries are economically poor and often described as less developed or underdeveloped. Westerners often conclude that they have not changed much over the centuries, and that African poverty mainly reflects cultural and social conservatism.