Seljuk power was at its zenith during the reigns of sultans ALP-ARSLAN (1063-72) and MALIK SHAH (1072-92), who with their vizier NIZAM AL-MULK, revived Sunnite Islamic administrative and religious institutions. They developed armies of slaves (MAMELUKES) to replace the nomad warriors, as well as an elaborate bureaucratic hierarchy that provided the foundation for governmental administration in the Middle East until modern times. The Seljuks revived and reinvigorated the classical Islamic educational system, developing universities (madrasahs) to train bureaucrats and religious officials.
After Malik Shah's death, a decline in the quality of dynastic leadership and division of their rule among military commanders and provincial regents (atabegs) weakened the power of the Great Seljuks. The last of the line died in battle against the KHWARIZM-SHAHS in 1194.
A branch of the Seljuks established their own state in Anatolia (the sultanate of Konya or Rum, survived until it was conquered by the Mongols in 1243.
Stanford J. Shaw
Bibliography: Boyle, J. A., ed., Cambridge History of Iran, vol. 5: The Saljuq and Mongol Periods (1968); Cahen, Claude, Pre-Ottoman Turkey, trans. by J. Jones-Williams (1968); Grousset, Rene, Empire of the Steppes, trans. by Naomi Walford (1970); Klausner, Carla L., The Seljuk Vezirate: A Study of Civil Administration, 1055-1194 (1973); Leiser, Gary, ed. and tr., A History of the Seljuks (1988); Setton, Kenneth, ed., History of the Crusades, vol. 1, 2d ed. (1969).