Chahar Province

Chahar (Mongolian: ᠴᠠᠬᠠᠷ Чахар; traditional Chinese: 察哈爾; simplified Chinese: 察哈尔; pinyin: Cháhā'ěr), also known as Chaha'er, Chakhar, or Qahar, was a province of the Republic of China in existence from 1912 to 1936, mostly covering territory in what is part of eastern Inner Mongolia. It was named after the Chahar Mongolians.

Chahar Province is named after the Chahar, a tribal group of the Mongols who live in that area. Before the unification of the Mongol tribes under Genghis Khan, the area had seen intermittent Chinese influence over the native Mongols. After the Yuan Dynasty (1271–1368), the area was only intermittently controlled by China. The Chahar had become the personal appanage of the Khagans of Mongolia since the reign of Batumongke Dayan Khan (r. 1479–1517). By the Qing Empire (1644–1912), Chahar was not yet a Chinese province, but a "Special Region" (Zhangyuan (張垣特區)), although Yao Xiguang (姚錫光) proposed making Chahar a province as early as 1908.

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