After the fall of the Turkic Khazars in the 10th century, the Volga were conquered by the Volga Bulgaria, part of Greater Bulgaria. In the 10th century the Turks converted to Islam and traded with the Middle East and Central Asia. After the Mongol invasions of the 1230s, Volga Bulgaria was annexed by the Golden Horde. Its population evolved into the modern Chuvashes and Kazan Tatars.