The best response to the effects of the Treaty of Nanking on the Qing Dynasty, based on the given timeline of events, is:
The Qing dynasty faced rebellions and wars after the Treaty of Nanking. This led to its collapse.
This is substantiated by the events following the Treaty of Nanking, including the Taiping Rebellion, the Second Opium War, and ultimately the Xinhai Revolution, which culminated in the fall of the Qing Dynasty in 1912. The Qing Dynasty's loss in various conflicts, combined with internal strife, weakened its authority and support among the populace, contributing to its eventual collapse.