Oghuz Yabgu State
The Oghuz Yabgu State or Oghuz il (Old Turkic: Oghuz Land) was a Turkic state, founded by Oghuz Turks in 750, located geographically in an area between the coasts of the Caspian and Aral Seas. Oghuz tribes occupied a vast territory in Kazakhstan along the Irgiz, Yaik, Emba, and Uil rivers, the Aral Sea area, the Syr Darya valley, the foothills of the Karatau Mountains in Tien-Shan, and the Chui River valley (see map).