Central and West Asia come under the control of the Timurids, who rule over a large and important region for just over a hundred years. The Shaibanids, another Turko-Mongol dynasty, seize control of the urban oases of Transoxiana and Khwarazm from the Timurids in the sixteenth century. In the eastern regions, strife dominates the steppes, with different Mongol clans gaining and losing power over short periods of time. Several of the more long-lasting convert to Tibetan Buddhism during this period.