I ll try to make it even clearer Outer Mongolia can refer to the following The northern part of traditional Mongolia during the period of Manchu control 1691 1911 The Bogdo Khanate 1912 24 including the period of Chinese control 1919 21 A common designation for the state of Mongolia 1924 Present Mongolia as claimed by the Republic of China 1950s Present An English metaphor for a generically remote place All of these meanings should be covered in the article You don t have to agree as to whether the usage is correct or not it exists and is attestable AjaxSmack