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Manchukuo (1932-1945)
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Soviet Union (1922-1991)
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Austrian empire (1804–1867)
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Yugoslavia (1943-1992)
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Gran Colombia (1819-1831)
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Federation of Mali (1959–1960)
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Qing dynasty (1636-1912)
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People's republic of Cambodia (1979-1989)
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East germany (1949-1990)
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Khmer Republic (1970-1975)
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Austria-Hungary (1867-1918)
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Republic of Zaire (1971-1997)
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Democratic Kampuchea (1975-1982)
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Federal Republic of Central America (1823–1841)
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Kingdom of Ireland (1542–1800)
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Sultanate of Zanzibar (1856–1964)
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German empire (1871-1918)
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Spanish empire (1492-1976)
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Kingdom of Italy (1861-1946)
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People's Democratic Republic of Yemen (1967-1990)
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Chinese empire (1915-1916)
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Khmer empire (802-1431)
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Empire of Vietnam (1945)