In reply to GrahamD:
> Forming a state in this day and age I think you would actually want upwards of 50 million population unless you have some natural resource that makes you 'rich'.
Sure, but that isnt the point. Being rich is of lesser importance than being oppressed.
History shows us that peoples have always voted for self-determination and nationhood and thus the consequent risks of financial collapse and poverty, only when they felt oppressed enough to do so, ie literally physically oppressed at that time or around that time; Kosovo, Croatia, Slovenia, Bosnia, East Timor, South Sudan, or if physically oppressed/invaded within recent enough memory, such as in Norway (1905).
Basically, if you think youll get thrown in jail, persecuted, shot, invaded, or lose your business etc for expressing your oppinion, culture, language, youll be more inclined to simply put a cross on a paper, if given the chance.
The converse is also true, for Scotland in 2014 or Quebec in 1980, when the key ingredient of real oppression wasnt there or sufficient enough to make a difference in voters minds.
Rajoy and the the Madrid governments policy in Catalunia is completely understandable in a Spanish context and it might well work if current Catalan nationalism fades away as a result. However, they should keep this history lesson in mind when dealing with Catalunia, if they believe like I do that if Catalan nationalism doesnt go away and it if it grows even more, that there is inevitably going to be an official referendum there sorner or later.