Answer:
I think it is supported by the map.
Explanation:
Let´s start with paddy field: a flooded parcel of arable land, used for growing crops like rice. So if East Asia is where the Japanese race can be cultivated we have to have a reservoir somewhere between Japan and East Asia.
Manchukuo (or the state of Manchuria) was created by the Japanese in 1932 as a puppet state, and it is situated in northeastern China.
the native american tribes of the indians
The California gold rush began on January 24, 1848. The Gold Rush ended in the year 1855.
The answer in C the Great Wall of China
