What was the most significant result of the Opium Wars?

China’s navy was exposed as incompetent.
China could no longer impose tariffs.
They increased Britain’s influence in China.
They decreased Europe’s influence in China.

The most significant result of the Opium Wars was that they increased Britain's influence in China. The Treaty of Nanjing in 1842, which ended the First Opium War, granted Britain trading privileges, extraterritoriality, and the cession of Hong Kong. This marked the beginning of a period of increased Western influence and control over China's economy and politics.