Many of the towns in the oasis never recovered and were abandoned. However, Otrar city rose again and during the troubled years of civil wars, which followed Genghis Khan's death, the town again became an important political and economic center. By the middle of the 13th century it had returned as a large trade center on the way from the West to the East. During the second half of the 14th century Southern Kazakhstan was brought into the sphere of Timur's power. In February 1405, when Timur was visiting Otrar to gather his troops, he caught a cold and died in one of the Otrar palaces.