The "Spheres of Influence

The "spheres of influence"

A) were set up in Korea and Annam to enhance Chinese power in both areas.
B) were first created when the United States gained control of the island of Chusan in 1848.
C) enabled the Manchus to regain their power base in their Manchurian heartland.
D) were in part the result of local Chinese strongmen to sell exclusive economic privileges to foreign governments and their merchants.
E) in fact,never developed in China but did in Korea.