Complex sentence: The Qing dynasty defeated Yakub at Turpan in 1877 and he committed suicide, thus ending the Kingdom of Kashgaria, and returning the region to Qing Chinese control.
Split into simpler sentences: The Qing dynasty defeated Yakub at Turpan in 1877 after which he committed suicide. Thus ended the Kingdom of Kashgaria, and the region returned to Qing Chinese control.