The correct response is: "The Qing dynasty faced rebellions and wars after the Treaty of Nanking. This led to its collapse."
After the Treaty of Nanking was signed in 1842, the Qing Dynasty experienced significant internal strife and external challenges. The subsequent events listed in the timeline, such as the Taiping Rebellion (1850-1864), the Second Opium War (1856-1860), the First Sino-Japanese War (1894-1895), and the Boxer Rebellion (1899-1901), contributed to weakening the Qing's power and authority. These continuous conflicts and defeats diminished the Qing Dynasty's legitimacy and support from its citizens, ultimately culminating in the Xinhai Revolution (1911), which resulted in the collapse of the dynasty and the establishment of the Republic of China.