The early Turkic peoples descended from agricultural communities in Northeast Asia who moved westwards into Mongolia in the late 3rd millennium BC, where they adopted a pastoral lifestyle. By the early 1st millennium BC, these peoples had become equestrian nomads. In subsequent centuries, the steppe populations of Central Asia appear to have been progressively Turkified by East Asian nomadic Turks, moving out of Mongolia.. "These results suggest that Turkic cultural customs were imposed by an East Asian minority elite onto central steppe nomad populations... The wide distribution of the Turkic languages from Northwest China, Mongolia and Siberia in the east to Turkey and Bulgaria in the west implies large-scale migrations out of the homeland in Mongolia.. "Both Chinese histories and modern dna studies indicate that the early and medieval Turkic peoples were made up of heterogeneous populations. The Turkicisation of central and western Eurasia was not the product of migrations involving a homogeneous entity, but that of language diffusion."
