The most accurate effect of the Taiping Rebellion on China is that it significantly weakened the Qing dynasty, which led to further foreign intervention in China. This resulted in Europeans seizing control of various territories and establishing many ports for trade. Although Hong Xiuquan did establish the "Heavenly Kingdom of Great Peace," the overall outcome of the rebellion was detrimental to China, leading to increased vulnerability to foreign powers. Therefore, the best response in this context is:
Europeans seized control of a weakened China, establishing many ports for trade.