Civilization V Solo Reports

[Rowain]

*That's paraphrased. More(?) precisely, I've heard it defined as a nation whose borders match the extent of its ethnic group, and whose borders aren't home to any other ethnic groups. By this definition, there are only two nation states in all of Europe - do you know which?

na·tion-state
n.
A political unit consisting of an autonomous state inhabited predominantly by a people sharing a common culture, history, and language.

I think the key-word is predominantly here. Your first definition is very strict but the later one gives room for a lot more nations. For example Austria would not be a Nation according to the first deffinition but a nation state according to the 2nd.

Of course there remains the question how long back the shared history has to go. If you look back long enough there is no nation left .