How is china training different now from old china trade?

The Old China Trade refers to the early commerce between the Qing Empire and the United States under the Canton System, spanning from shortly after the end of the American Revolutionary War in 1783 to the Treaty of Wanghsia in 1844. The Old China Trade represented the beginning of relations between the United States and East Asia, including eventually U.S.

b) brahmans   is nomadic society

ok sorry the answer is a. by their religion