Economy in the Achaemenid PeriodThe Achaemenid empire, extending from the Indus river to the Aegean sea, comprised such economically developed countries as Egypt, Syria, Phoenicia, Babylonia, Elam, and Asia Minor, lands which had their long traditions of social institutions, as well as Sakai, Massagetai, Lycians, Libyans, Nubians and other tribes undergoing the disintegration of the primitive-communal phase. Therefore, the socioeconomic structure of the empire was characterized by extreme diversity (Dandamaev and Lukonin, pp. 95-96). For this reason the empire remained a relatively decentralized state with each ethnic province honoring local customs and traditions (idem, pp. 90-91).