[Niall]

I don't think the idea of a one world government is anything that will ever come into being in the sense that it replaces all other states. As others have said in here, the national identities and individuality of the world's nations are too strong for that. Maybe a stronger, more powerful version of the United Nations will arise. That's the only thing I can see happening really.

However, the idea that regions of the world may converge into one nation is something entirely feasible to me, maybe not now, but in the future certainly. Europe will probably wind up becoming some sort of Federative nation far off in the future. I mean look at it now: with a constitution, single currency, parliament, and president it's already a semi-state in many ways. I can easily see that union getting tighter to become a formal nation.

I don't really see that for the rest of the world though. China will probably break up as others have said. The rich/poor gap is too great and the communist party can't censor the public forever. Democracy will happen there someday. It's not really a question of 'if' in my opinion, but 'when'.