Indo-Iranian tribes, Turkic tribes from Siberia and Altai, and Mongolic tribes took part in the formation of Kazakhs and other Central Asian Turkic peoples. Modern Kazakhs are descendants of Turkic tribes (Kipchaks or Cumans), Mongol groups (Kereis, Naimans, etc.) and Indo-Iranian tribes (Wusun, Sarmatians, Scythians, etc.) which populated the territory between Siberia and the Black Sea and remained in Central Asia when the Turkic and Mongol groups started to invade and conquer the area between the fifth and thirteenth centuries AD