On The Relationship Of Caqadai Khanate And (?)gedei Khanate

After the conquest of Central Asia, Genghis Khan subinfeudated the territory to his sons, which was called Ulus. Caqadai was Genghis Khan's second son. His east domain lied on Uigur, his west domain lied on the east bank of Amu Darya, including Transoxiana and Turkestan. Caqadai khanate was established on the basis of Caqadai's Ulus and gradually broke away from the Mongolian Empire. Ogedei was Genghis Khan's third son. His domain lied on Black Irtysh in the east, Lake Balkhash in the west, including Imil, Tarbagatai and Urungu. However, Ogedei khanate was not established on the basis of Ogedei's Ulus, but was built by the prince of Ogedei clan, Qaidu, who took advantage of the civil war between Kublai and Ariq-boga who both wanted to be Khan. Qaidu occupied Transoxiana and Turkestan by war.The political relationship between Caqadai khanate and Ogedei khanate can be divided into three periods: the first period was from 1219 to 1259, during this period Caqadai Ulus and Ogedei Ulus was on good terms with each other; the second period was from 1259 to 1301, during this period the princes of Caqadai clan attached themselves to Ogedei khanate; the third period was from 1301 to 1370, during this period the princes of Ogedei clan attached themselves to Caqadai khanate. The economic relationship between Caqadai khanate and Ogedei khanate has the same three periods as political relationship: during the first period, the princes of Ogedei clan were Khan one after the other, the economy of Caqadai Ulus was not independent, the economy of the territory which Caqadai khanate ruled was a part of whole Mongolian Empire; during the second period, the economy of Caqadai khanate was controlled by Qaidu to a certain extent, Qaidu attached importance to the development of agricultural areas in Transoxiana, which benefited the development of the economy in Transoxiana; during the third period, Caqadai khanate got rid of the obstacles and developed the economy independently.The federal relationship between Caqadai khanate and Ogedei khanate has not only positive significances but also negative significances to the intercourse between the East and the West and the development in Transoxiana.