1. Outer Mongolia
Wikipedia definition
2. Outer MongoliaOuter Mongolia was a territory of the Manchu Qing Dynasty. Its area was roughly equivalent to that of the modern state of Mongolia, which is sometimes informally called "Outer Mongolia" today. There was and is some confusion about whether Outer Mongolia only consisted of the four Khalkha aimags (Setsen Khan Aimag, Tüsheet Khan Aimag, Sain Noyon Khan Aimag and Zasagt Khan Aimag), or of Khalkha plus Oyirad areas Khovd and Tannu Uriankhai.
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外蒙古 【そともうこ】


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