- Atsiz
Infobox Monarch
name =Atsïz
title =Shah
caption =
reign =Khwarazm : 1127 - 1156
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predecessor =Qutb ad-Din Muhammad
successor =Il-Arslan
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father =Qutb ad-Din Muhammad
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date of death =1156
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place of burial =|Atsïz (PerB|علاء الدين أتسز - "Alā ud-Dīn Atsiz"; †1156) was
Khwarazm Shah from 1127 until his death. He was the son of Qutb ad-Din Muhammad.Atsïz gained his position following his father's death in 1127. During the early part of his reign he focused on securing Khwarazm against nomad attacks. In 1138 he rebelled against his suzerain, the Seljuk sultan
Ahmed Sanjar , but was defeated in Hezarasp and forced to flee. Sanjar installed his nephew Suleiman Shah as ruler of Khwarazm and returned toMerv . Atsïz returned, however, and Suleiman Shah was unable to hold onto the province. Atsïz then attackedBukhara , but by 1141 he again submitted to Sanjar, who pardoned him and formally returned control of Khwarazm over to him.The same year that Sanjar pardoned Atsïz, the
Kara Khitai underYelü Dashi defeated the Seljuks at Qatwan, nearSamarkand . Atsïz took advantage of the defeat to invadeKhurasan , occupying Merv andNishapur . Yelü Dashi, however, sent a force to plunder Khwarazm, forcing Atsïz to pay an annual tribute. In 1142 he was expelled from Khurasan by Sanjar, who invaded Khwarazm in the following year and forced Atsïz back into vassalage, although Atsïz continued to pay tribute to the Kara Khitai until his death. Sanjar undertook another expedition against Atsïz in 1147 when the latter became rebellious again.In 1153 Sanjar was defeated and imprisoned by a collection of
Oghuz tribes, and Khurasan soon descended into anarchy. The portion of the Seljuk army that refused to join the Oghuz proclaimed the former ruler of theKarakhanids , Mahmud Khan, as their leader. Mahmud sought an alliance with Atsïz against the Oghuz, while Atsïz's brother Ïnal-Tegin had already in 1154 plundered a part of Khurasan. Atsïz and his sonIl-Arslan departed from Khwarazm, but before they could make any gains Sanjar escaped from his captivity and restored his rule. Atsïz died soon afterwards, and was succeeded in Khwarazm by Il-Arslan.References
*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.
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