The Taiping Rebellion, also known as the Taiping Civil War or the Taiping Revolution, was a civil war in China between the Manchu-led Qing dynasty and the Hakka-led Taiping Heavenly Kingdom. The conflict lasted for 14 years, from its outbreak in 1850 until the fall of Nanjing—which they had renamed "Tianjing"—in 1864. However, the last rebel forces were not defeated until August 1871. Estimates of the conflict's death toll range between 20 and 30 million people, representing 5–10% of China's population. While the Qing ultimately defeated the rebellion, the victory came at a great cost to the state's economic and political viability.

The Qing dynasty, officially the Great Qing, was a Manchu-led imperial dynasty of China and the last imperial dynasty in Chinese history. The dynasty, proclaimed in Shenyang in 1636, seized control of Beijing in 1644, which is considered the start of the dynasty's rule. The dynasty lasted until 1912, when it was overthrown in the Xinhai Revolution. In Chinese historiography, the Qing dynasty was preceded by the Ming dynasty and succeeded by the Republic of China. The multi-ethnic Qing dynasty assembled the territorial base for modern China. It was the largest imperial dynasty in the history of China and in 1790 the fourth-largest empire in world history in terms of territorial size. With over 426 million citizens in 1907, it was the most populous country in the world at the time.