محمدرضا قلی زاده

The present study, with brief references to the unrest that occurred in the territory of the Abbasid Caliphate in the second period of his rule Which led to the decline and decline of the exchange and economic system of the ports and the commercial area of ??the Persian Gulf, the rise and rise of power Albuyeh as a consequence of the weakness of the Abbasid caliphate and the most important effects of the policies of this family Examines Iranians on prosperity and prosperity on the shores of the Persian Gulf. Also the relationship between shoreline developments and It examines the Persian Gulf states in terms of governance and regional rivalries in the Albuev era. Research findings show It shows that the weakness of the caliphate system, insecurity and chaos and chaos in the ports and southern coasts such as Basra and Qatif and Ehsa to Bahrain, in parallel with the emergence of the Iranian dynasty of Alboye, has contributed to the growth and prosperity of the ports and the northern shores of the Persian Gulf. As a result, the northern ports of the Persian Gulf, centered in Siraf, experienced a period of glory and exaltation during the reign of Albuyeh. The escalation of internal disputes between Albue and the escalation of regional rivalries over control of trade routes, this gradually Ports were evacuated, and the shores of the Persian Gulf declined, and maritime trade routes to ports on the coast The Red Sea was transferred to the Fatimid territory of Egypt