After Öz Beg Khan assumed the throne in 1313, he adopted Islam as the state religion. He built a large mosque in the city of Solkhat in the Crimea in 1314 and proscribed Buddhism and Shamanism among the Mongols in the Golden Horde. By 1315, Öz Beg had successfully Islamicized the Horde and killed Jochid princes and Buddhist lamas who opposed his religious policy. Under the reign of Öz Beg, trade caravans went unmolested and there was general order in the Golden Horde. When Ibn Battuta visited Sarai in 1333, he found it to be a large and beautiful city with vast streets and fine markets where Mongols, Alans, Kypchaks, Circassians, Rus', and Greeks each had their own quarters. Merchants had a special walled section of the city all to themselves.