The conquest of the territory of Central Asia provided Genghis Khan with a geostrategically important region. Mongolian troops were able to move freely to the countries of Europe and Asia. The study of this period is especially important for the history of Kazakhstan since the subsequent development of the Juchi and Chagatai uluses developed in symbiosis with the local traditions and culture of the Turkic peoples with a predominance of the Turkic-Islamic position.

In the Middle Ages, the ulus of Jochi, which covered the territory of Desht-i-Kipchak, was one of the most economically developed states on the territory of Eurasia. In the XIII-XIV centuries. the ulus reaches its peak, international trade relations are established with China, Western Europe, Egypt, Asia Minor, India, military, cultural, religious and other ties are being established. In this context, the work "Economic History of the Golden Horde (XIII-XV centuries)" by the Turkish scientist EmelGogceKılıç provides important information.

The territory of the Chagatai ulus, which covered the lands of Maverannahr, Zhetysu, East Turkestan, throughout the history of its existence, constantly underwent changes due to the policy of its rulers. In the period before the entry of Amir Timur into the political arena, a significant influence of the Dulat tribe, and then the Barlas tribe, can be seen in this territory. Subsequently, the unified territory of the Ulus was divided into Moghulistan, subject to Chagatai, and the state of Amir Timur. The Turkish scholar Orhan Chinar examines these events in detail in his work "The Political, Military and Social Situation of Turkestan during the Chagatai State".

The works are based on reliable sources in Italian, Latin, Byzantine, Arabic, Persian, Armenian and other languages.