Uyghurs
The history of the Uyghur people, as with the ethnic origin of the people, is a matter of contention between Uyghur nationalists and the Chinese authority. Uyghur historians viewed the Uyghurs as the original inhabitants of Xinjiang with a long history. Uyghur politician and historian Muhemmed Imin Bughra wrote in his book "A History of East Turkestan", stressing the Turkic aspects of his people, that the Turks have a 9000-year history, while historian Turghun Almas incorporated discoveries of Tarim mummies to conclude that Uyghurs have over 6400 years of history, and the World Uyghur Congress claimed a 4,000-year history in East Turkestan. However, the official Chinese view asserts that the Uyghurs in Xinjiang originated from the Tiele tribes and only became the main social and political force in Xinjiang during the ninth century when they migrated to Xinjiang from Mongolia after the collapse of the Uyghur Khaganate, replacing the Han Chinese they claimed were there since the Han Dynasty. Many contemporary Western scholars, however, do not consider the modern Uyghurs to be of direct linear descent from the old Uyghur Khaganate of Mongolia. Rather, they consider them to be descendants of a number of peoples, one of them the ancient Uyghurs.
Uyghur nationalism
Those that use the term "Uyghurstan" tend to envision a state for the Uyghur people. Those groups that adopt this terminology tended to be allied with the Soviet Union while it still existed (Indeed, Russia incited and aided the rebellion in attempt to annex these regions in the future). Since then some of the leaders of these groups have remained in Russia, Kazakhstan or Kyrgyzstan, or have emigrated to Europe and North America. It is worth noting that none of these identities are exclusive. Some groups support more than one such orientation. It is common to support both an Islamic and Turkic orientation for Xinjiang, for example, the founders of independent Republic in Kashgar in 1933 used names "Turkic Islamic Republic of East Turkestan" and "Eastern Turkestan Republic" the same time.