What do you know about the social structure of the Karakhanids? Why did the Karakhanid state collapse into two parts?

1) Khan ruled in the Karakhanid state. The rulers of the lands were called ilak or tegyn. The landowners were called ikts, the same word was used to describe the taxes that were collected from the peasants. It can be said that to some extent the Karakhanid Khanate had the features of a feudal kingdom, which was divided into appanages (large and small), respectively, ilaks and tegyns (feudal lords-landowners) ruled such appanages.

2) The collapse of the Karakhanid state occurred due to internecine wars. Thus, in 1040, two khanates arose, the Western with the capital Samarkand and the Eastern.