Who won the Opium Wars? Why were they victorious?

Explanation:

Great Britain won the first Opium War. The opium trade continued, and China had to compensate Great Britain for its losses, give Hong Kong Island to the British, and increase the number of treaty ports where the British could trade and reside. Great Britain and France won the second Opium War.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).