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1.
Second East Turkestan Republic
Soviet satellite from 1944 to 1949
2.
Free State of Bottleneck
German quasi state from 1919 to 1925.
3.
Kingdom of Powys
Welsh Kingdom from the 5th to 11th centuries.
4.
Limerick Soviet
A self declared Irish soviet that ran Limerick for 2 weeks in 1919
5.
Commune of the Working People of Estonia
Unrecognised nation during the Estonian war of independence in 1918-1919
6.
Polish-Latvian commonwealth
It was the Polish-Lithuanian commonwealth
7.
Holy Roman Khanate
Either HRE or Crimean Khanate. Not real
8.
Persian Soviet Socialist Republic
Unrecognised Soviet state from June 1920 to September 1921.
9.
Kingdom of Setul Mambang Segara
Country in modern day Thailand and Malaysia from 1808 to 1916.
10.
Greenland
Part of Denmark.
11.
Kalmar Union
A kind of commonwealth in Scandinavia from 1397 to 1523.
12.
Kyber Rouge
It was the Khymer Rouge regime in Cambodia lead by Pol Pot.