Yenisei Kirghiz

The Yenisei Kirghiz, also known as the Khyagas or Khakas, were an ancient Turkic people that dwelled along the upper Yenisei River in the southern portion of the Minusinsk Depression from the 3rd century BCE to the 13th century CE. The heart of their homeland was the forested Tannu-Ola mountain range (known in ancient times as the Lao or Kogmen mountains), in modern day Tuva, just north of Mongolia. The Sayan mountains, and much of Mongolia's Great Lakes Depression were also included in their territory at different times. The Kirghiz Khaganate existed from 550 to 1293 CE, in 840 it took over the leadership of the Turkic Khaganate from the Uigurs, expanding their state from the Yenisei territories into the Central Asia and Tarim basin. The Yenisei Kirghiz mass migration to the Jeti-su resulted in the formation of the modern Kirghizstan, land of the modern day Kirghiz.