The Golden Horde.—Of the Mongol tribes who became en tirely subject to Russia the principal are those of the Crimea, of Kazan, and Astrakhan; of these the Tatars of Kazan are the truest representatives of the Golden Horde or western Kipchaks, who originally formed the subjects of Batu and Orda. Batu fixed his headquarters on the Volga, and there set up his golden tent from which the horde acquired its name. In 1255 Batu died and was succeeded by his brother, Bereke Khan. During the reign of this sovereign the exactions which were demanded from the Russian Christians by the Mongols aroused the Christian world against the barbarian conquerors, and at the command of Pope Alexander IV. a general crusade was preached against them. The crusaders, lacking unity, were surprised when a Tatar host, led by Nogai and Tulabagha, appeared in Poland. After a rapid and triumphant march the invaders, took and destroyed Cracow, and thence advanced as far as Bythom (Beuthen) in Oppeln, from which point they eventually retired, carrying with them a crowd of Christian slaves.
From this time the Mongols became an important factor in European politics. They corresponded and treated with the European sovereigns, and intermarried with royal families. Hulagu married a daughter of Michael Palaeologus ; Toktu Khan took as his wife Maria, the daughter of Andronicus II. ; and to Nogai Michael betrothed his daughter Irene. Toktu, the second khan in succession to Bereke, is the first Mongol ruler of whom we hear as having struck coins. Those issued during his reign bear the mint
marks of Sarai, New Sarai, Bulgar, Ukek, Khwarizm, Krim, Jullad and Madjarui, and vary in date from 1291 to 13 I 2.
The adoption of Islam by the rulers of the Golden Horde drew closer the relations of the Mongols with Constantinople and Egypt. Nasir, ruler of Egypt, sent to demand in marriage a prin cess of the house of Jenghiz Khan. At first his request was refused by the proud Mongols, but the present of a million gold dinars, besides a number of horses and suits of armour, resulted in a prin cess landing at Alexandria in regal state in 1319. With that reli gious toleration common to his race, Uzbeg Khan, having married one princess to Nasir, gave another in marriage to George the prince of Moscow. Uzbeg protected the Russian churches within his frontiers, and put his seal to his new religious views by marry ing a daughter of the Greek emperor, Andronicus III. He died in 1340, after a reign of 28 years. His coins were struck at Sarai, Khwarizm, Mokshi, Bulgar, Azak and Krim, and are dated from 1313 to 1340. His son and successor, Tinibeg Khan, after a reign of only a few months, was murdered by his brother, Janibeg Khan, who usurped his throne, which was snatched from him by violence in 1357. As he lay ill on his return from a successful expedition against Persia he was murdered by his son Berdibeg, who, in his turn was, after a short reign, murdered by his son Kulpa. With the death of Berdibeg the fortunes of the Golden Horde began rapidly to decline.