The correct answer to your question would be D.
The Rape of Nanjing was significant because of the sheer volume of people who were massacred, because it was actually a direct act of manipulation and terrorism, these two things made also the United States more attentive towards the happening in the Pacific as it saw that the Japanese had an increased growth in influence over this region.
It’s the second one I believe
Russia and Britain both gained partial control of Persia's economy.
Answer:
China conquered the Mongolian State in 1919.
