The Blue Board

Nope. Cultural differences will prevent this from happening. As much as the left likes to think otherwise cultural ties are very strong to people, and people in China and the US(for example) aren't going to take to kindly to foreigners making their laws. I know you will find this hard to believe but the EU isn't the most popular entity in Europe, especially in places like GB. People want to rule themselves and that will never change.

Will probably be 50-100 years, but our world is only getting more and more global.

Major wars are great for no one. They are tolerable to those that win them.

Not anymore. There is the potential for huge losses of capital depending on who we go to worth with.

Nope. And we haven't even touched language yet. Language is possibly the greatest dividing factor in history along with religion, which reminds me...religion. Also what is this global culture going to look like? Which of the current cultures will ultimately be more prevalent in the global culture? Will it resemble the West, the ME, East Asia, Latin America? If you think people all over the world are going to give to an encroaching global culture you are dreaming.

That's always been the case to an extent. And when countries get pushed to the point of war there are always overriding factors.

Maybe one day in the very distant future, and yeah it would be kinda nice assuming this would be a free society. But it seems unlikely even then. All over the world people are convinced their culture is the best and they aren't going to want to give it up, culture is an incredibly strong bond...even stronger than economics. Unless such a union means the difference in eating or not..which it won't...I on't see people giving into this. Trade Unions are one thing, governments that control continents are another.

And even if it did happen it would fail eventually. Relatively homogeneous nation-states have failed all through history over disagreements, now imagine the shear number of disagreements the people of the world will have on how to run things.

I think the political union would function as a federal republic with the basics being problems and solutions given to the proper scale. I doubt it will meddle into state affairs, but be will be a mix of the UN,WTO, a global central bank, and collective agencies for R&D to create the largest possible economics of scale for things like space exploration and colonization. The benefits of a single global currency are ridiculously skewed towards outweighing any sovereign negatives.

This is how the EU was presented. I Read the websites of several European papers and like to visit international forums as well. The EU has now expanded into dictating national affairs on many levels, and over time European nations are becoming less autonomous. It's the nature of all governing bodies to seek to expand their power and influence. The EU is no exception.

This encroachment by the EU is not going over too well. Europeans recognize the obvious benefits of the union, but resent the hell out of Brussels continuously dictating internal affairs like immigration, tax policy etc.

And that doesn't even include the fact that the EU is kinda the "canary in the coal mine" for international currencies. It shows that all participants have to be fairly equal in order for a common currency to work. The world has a long way to go to achieve relative equality in economic health.

Also in support of the argument that the Unions would encroach on national sovereignty, is that fiscal policy has to be basically the same for everyone, which necessitates a larger governing body dictating much if not all fiscal policy for member nations.

You are talking about a global currency, and the Euro may very well not survive the decade.