Analysis of information sources in references of the Wikipedia article "Đại hãn quốc Mông Cổ" in Vietnamese language version.
in 1919, a Japanese influenced faction in the Chinese government mounted an invasion of Outer Mongolia and forced its leaders to sign a "request" to be taken over by the government of China. Japan's aim was to protect its own economic, political, and military interests in North China be keeping the Russian Revolution from influencing Mongolia.
