Relations between the Chaghadaid Ulus and the Golden Horde
The author considers related and religious aspects of the relations between the Chaghadaids and the Jochids during the period of unity of the Chaghadaid ulus and the heyday of the Golden Horde, from the 13<sup>th</sup> century to the 1360s. The strained relations between Jochi and Chaghadai, the eldest sons of Chinggis Khan, have been examined in detail in modern studies, as well as the consequences of a quarrel between Batu, the son of Jochi, and Buri, the son of Chaghadai, and Güyük, the son of Ögedei, which took place during the Great Western campaign (1236-1242). The political alliance of the Toluids and the Jochids, on the one hand, and the Chaghadaids with the Ögedeids, on the other, became the logical conclusion of the tense relations between Jochi and Chaghadai that continued with their sons. Later, with the formation of the Hulaguid State and the Yüan Empire and the emergence of territorial disputes between the Golden Horde and the Ilkhans, the relations between the Chaghadaids and the Jochids undergo substantial changes. First of all, the Jochids changed their priorities in relations to other Chinggisids. The interests of the Chaghadaids and Jochids coincided at the all-imperial level and they united in the struggle against the Toluids, which was formalized at the Talas Kurultai of 1269.