Analysis of information sources in references of the Wikipedia article "투란" in Korean language version.
Iranian term applied to region lying to the northeast of Iran and ultimately indicating very vaguely the country of the Turkic peoples.
In a series of relatively minor movements, Turkic groups began to occupy territories in western Central Asia and eastern Europe which had previously been held by Iranians (i.e. Turan). The Volga Bulgars, following the Avars, proceeded to the Volga and Ukraine in the 6th–7th centuries.
