likely a continuation of the prospering milieu that had existed during his father's reign, with the secretary and poet Rashid al-Din Vatvat continuing to serve as the head of the chancery. References Sources Biran, Michael. The Empire of the Qara Khitai in Eurasian History: Between China and the Islamic World. Cambridge, UK: Cambridge University Press, 2005. Boyle, J. A. . The Cambridge History of Iran Volume 5: The Saljuq and Mongol Periods. Cambridge, UK: Cambridge University Press, 1968. 1172 deaths Khwarezmid rulers Year of birth unknown 12th-century Turkic people Anushtegin dynasty