Complex sentence: The Taiping Rebellion began in December 1850, when Hong Xiuquan a Hakka leader of a sincretic Christian sect defeated local forces sent to disperse his followers and proclaimed the beginning of the establishment of the Taiping Heavenly Kingdom, the rebellion spread to several provinces with amazing speed.
Split into simpler sentences: The Taiping Rebellion began in December 1850, when Hong Xiuquan, a Hakka leader of a syncretic Christian sect, defeated local forces sent to disperse his followers. Hong then proclaimed the establishment of the Taiping Heavenly Kingdom and the rebellion spread to several provinces with amazing speed.