(1)
I was speaking about 苏联.... but you were thinking about Russia
苏联 = Union of Soviet Socialist Republics (USSR)
Russia = 俄罗斯
You can find Russia this country but you cannot find USSR this country any more today.... therefore 苏联亡国 is a correct statement !
(2)
南斯拉夫亡国... is also a correct statement .......
because there is no such a country called Yugoslavia any more ...
Mark 16:15-16 :16
And He said to them, Go into all the world and preach the gospel to all creation.
"He who has believed and has been baptized shall be saved; but he who has disbelieved shall be condemned."
中国 is short for (1) 中华民国 and (2) 中华人民共和国
中国 this term didn't exist in 大清国....大清国 didn't call herself as 中国...The people in 大清国 called themselves as 大清子民....
一羣人住在唐人街...but 唐人街 is not a country ...
unless it's under your definition...
even it's under your definition, 唐人街 still cannot issue passports to the people who live there...