The Golden Horde is largely Turkified and Islamized under Öz Beg Khan, a convert to Islam who reigns from 1313 to 1341.

Under Öz Beg Khan and his successor Janibeg (1342–1357), Islam, which among some of the Turks in Eurasia has deep roots going back into pre-Mongol times, gains general acceptance, though its adherents remain tolerant of other beliefs.

In order to successfully expand Islam, the Mongols build a mosque and other "elaborate places" requiring baths—an important element of Muslim culture.

Sarai attracts merchants from other countries.

The slave trade flourishes due to strengthening ties with the Mamluk Sultanate.

Growth of wealth and increasing demand for products typically produce population growth, and so it is with Sarai.

Housing in the region increases, transforming the capital into the center of a large Muslim Sultanate.

Jani Beg, after putting two of his brothers to death, crowns himself in Saray-Jük.

He is known to have actively interfered in the affairs of Russian principalities and of Lithuania.

The Grand Princes of Moscow, Simeon Gordiy, and his successor Ivan II, will be under constant political and military pressure from Jani Beg.