Muhammad Jahan Pehlevan
After the death of Shams al-Din Ildeniz, in 1175, the Seljuq Sultan Arslan Shah tried to escape from the yoke of the Grand Atabeg of Azerbaijan but failed, and was poisoned to death by Shams ad-Din's son, the new Grand Atabeg Mohammed Jahan Pahlavan (1174–1186). Pahlavan transferred his capital from Nakhchivan to Hamadan in western Iran, and made his younger brother, Qizil Arslan Othman, the ruler of Azerbaijan. In 1174, Qizil Arslan captured Tabriz, which subsequently became his capital.
Jahan Pahlavan suppressed all rebellious emirs and appointed faithful mamluks to key positions. He apportioned each of them any region or town as iqta.The twelve years of his rule are considered the most peaceful period of the state’s existence. Under his reign the central power was strengthened and no foreign enemy invaded the territory belonging to the Atabegs. Friendly relations with Khwārazm-Shāhs, the rulers of Central Asia, were founded. All those facts had positive influence on the development of science, handicraft, trade and arts.
Read more about this topic: Eldiguzids (Atabegs Of Azerbaijan)