The Second Opium War

The Second Opium War (1856-1860), also know as the Arrow War, evolved in a similar fashion to the First Opium War, with a small diplomatic conflict escalating into war. Beset internally by the Taiping rebels, China had few resources to spare to defend itself from an outside threat. With the French joining the British, China suffered another humiliating defeat and was forced to sign yet another unequal treaty, the Treaty of Tianjin.

For further reading, try this brief history of the opium trade and Opium Wars.

Signing of the Treaty of Tianjin.