Complex sentence: In 1211, Kuchlug seized the throne of the Kara-Khitans, and the last of the Karakhanids in the Eastern Karakhanid state was killed in revolt in Kashgar, putting an end to Eastern Karakhanid state.
Split into simpler sentences: In 1211, Kuchlug seized the throne of the Kara-Khitans. That same year the last of the Karakhanids in the Eastern Karakhanid state was killed in a revolt in Kashgar, putting an end to Eastern Karakhanid state.