The Uyghur Khaganate, or, Uyghur Empire or Uighur Khaganate or Toquz Oghuz Country (Mongolian: Уйгурын хаант улс, Tang era names, with modern Hanyu Pinyin: traditional Chinese: 回鶻; simplified Chinese: 回鹘; pinyin: Huíhú or traditional Chinese: 回紇; simplified Chinese: 回纥; pinyin: Huíhé) was a Turkic empire that existed for about a century between the mid 8th and 9th centuries. They were a tribal confederation under the Orkhon Uyghur (回鶻) nobility, referred to by the Chinese as the Jiu Xing ("Nine Clans"), a calque of the name Toquz Oghuz.
Read more about Uyghur Khaganate: The Rise of Uyghurs in Mongolia, Golden Age, Relationship With Sogdians, Karabalghasun, Decline, Collapse, Aftermath, List of Uyghur Khagans