evidence: From this time, the political separation between Inner Mongolia and Outer Mongolia was more clear. Roughly speaking, Inner Mongolia included Eastern Mongolian tribes, while Outer Mongolia included Khalkha Mongol khanates as well as Oirat territories. Other Mongol entities also existed in Hulunbuir, Huh Nuur and Alasha. [...] In 1921, Mongolian People’s Republic was established mostly on the basis of Bogd Khanate Mongolia thus incorporating Khalkh territories plus Hobd, Dariganga and Khuvsgul. On the other hand, Inner Mongolia saw rather different developments: since in the last years of Qing dynasty, policies of the weakening government made eastern Inner Mongolia and Manchuria made targets for large Chinese immigration, Republic of China decided to divide Inner Mongolia into Chinese provinces. This resulted in independence movements and Mongol support for Mengjiang puppet state. During Chinese Civil War, Inner Mongolian communist activists gained autonomy of Inner Mongolia which was more attractive than being separately colonized provinces in a foreign country.