He afterwards subjugated the five northern provinces of China, which were long imperfectly known under the name of Kathay; and successively reduced Carisme or Transoxiana, now great Bucharia, Chorassan, and Persia: and he died in 1227, after having exhorted and instructed his sons to persevere in the career of conquest, and more particularly to complete the conquest of China.

The vast empire established by Zingis and his immediate successors was now broken down into four vast fragments, each a powerful empire, Mongalia, Kipzak, Zagtai or Transoxiana, and Persia; and these four khans often contended with each other.

In the distribution of the vast empire of Zingis, we have already seen that Zagathai, one of his sons, received the subordinate rule of Transoxiana, or the rich country on the rivers Jihon or Amu, and the Sir or Sihon, the Oxus and Jaxartes of the ancients.

After various fortunes, he in 1370, rendered himself absolute sovereign of Transoxiana, then called Zagatai, after its first Mogul ruler; but for some time, he affected to govern as prime minister, or general, to a nominal khan of the house of Zingis, who served as a private officer at the head of his family horde in the army of his servant.

Hardly any part of it now remains independent, except Zagatai; or Transoxiana, Kharism, Candabar, and the deserts of Western Tartary: the former of which is subject to the Usbeks, and the latter to the Kirguses.

Zagathai, a son of Zingis, got Transoxiana, or the country of the Kirguses.

Bukhara is a celebrated city in Tartary; it was formerly the capital of the province called Mawaralnahr, or Transoxiana, before the Tartar conquerors fixed on Samarkand.