What effect did the opium war and the treaty of nanjing have on china?

The Opium War (1839-1842) and the Treaty of Nanjing (1842) had profound effects on China, marking the beginning of what is often referred to as the "Century of Humiliation." The treaty forced China to cede Hong Kong to Britain, open several ports to British trade, and grant extraterritorial rights to British citizens, undermining Chinese sovereignty. This loss of territory and autonomy fueled widespread resentment and contributed to internal strife, leading to social upheaval and further foreign intervention in subsequent decades. Ultimately, these events catalyzed China's modernization efforts and reform movements in response to foreign domination.