Ethnosociology is not simply the sociology of the ethnic groups. It is something quite different. It is the particular method of studying human society as the development of its primordial and basic ethnic structure. So ethnosociology searches and finds ethnos not only where it is present explicitly, but also where it is absent on the surface but continues to exercise its hidden influence implicitly. Thus ethnosociology interprets “ethnically” also the cases of the non-ethnic societies. How? It will become clear during the development of the present course.