Battle of the Ural

In 1223, after defeating the Rus' and Cuman/Kipchak forces at the Battle of the Kalka, the Mongol army under Generals Subutai and Jebe was sent to subjugate Volga Bulgaria. At the time, Genghis Khan's troops were considered invincible. Nevertheless, at the end of 1223 the Bulgars managed to overcome the Mongols. After fierce clashes with the Bulgars, the exhausted Mongols returned along the Volga. Meanwhile, the Rus' continued their attacks on the Bulgar state, attempting to gain control of the wealthy region. In 1229, Ögedei Khan sent a new Mongol army under Kukdai and Bubedei to conquer the region. 

The Bulgar border guards on the Ural River were defeated. Mongol troops seized the upper Ural valley. In 1232, Mongol cavalry subjugated southeastern Bashkiria and occupied the southern regions of Volga