Sanjar

...The successive sultans had no active intention to advance into Anatolia, and the Turkmen who had flown in from the area of ​​Mawarannahr and the royal families who had failed in their rebellions moved westward to found the Rum Seljuk Empire, which set the stage for the Turkification of Anatolia. The dynasty was temporarily reunited during the reign of Sanjar (1117-57), but the Ater Begs gained independence in Jazira, Syria, and Azerbaijan, and the eastern provinces were thrown into chaos by the invasion of the Kara-Khitans and the rebellion of the nomadic Turks, the Oghuz, and Sanjar himself was taken prisoner by the Oghuz, and the authority of the sultan fell to the ground. After his death, the Seljuk local governments remained in Iraq and Kerman, but the former was destroyed by the Khwarezmian dynasty and the latter by the Oghuz. ...

*Some of the terminology explanations that mention "Sanjar" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…歴代のスルタンはアナトリアへ進出する積極的な意図はなく，新たにマー･ワラー･アンナフル方面より流入したトルクメンや反乱に失敗した王族らが，西方へ移動してルーム･セルジューク朝を建国し，アナトリアのトルコ化への先鞭をつけた。サンジャルSanjar(在位1117‐57)の時代に一時王朝の再統一がなされたものの，ジャジーラ，シリア，アゼルバイジャンではアター･ベクたちが独立し，カラ･キタイの侵入，遊牧トルコ族であるオグズの反乱により東部州が混乱し，サンジャル自身もオグズの捕虜となって，スルタンの権威は地に落ちた。彼の死後，イラクとケルマーンにセルジューク朝の地方政権が残ったが，前者はホラズム･シャー朝に，後者はオグズによって滅ぼされた。…

※「Sanjar」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報