Answer:
The Taiping Rebellion was a civil war with great religious and social connotations, which occurred in China between the years 1850 and 1864, in which the imperial forces of the Qing Dynasty and the Heavenly Kingdom of the Great Peace faced each other.
The Heavenly Kingdom of the Great Peace was a theocratic revolutionary state ruled by a Christian Hakka mystic named Hong Xiuquan, a Christian convert who proclaimed himself king of the nation and the new Messiah, even declaring himself the younger brother of Jesus Christ sent from God to eradicate the cult of the devil.
The most reliable sources estimate the total of deaths in 20 million people, although some sources claim that the death toll reached 50 million, coming to be considered this conflict as the bloodiest war before World War II.
Only the intervention of the Western powers in favor of the Qing Empire, the sudden death of Xiuquan in 1864 and the incapacity of his successor, were the reasons that diminished the rebellion; however, it left evidence of the social and economic volatility suffered by China during the second half of the nineteenth century, which would trigger subsequent rebellions and overthrow the Imperial government in 1911 with the Xinhai Revolution.