Western union

How can the members of the European Union, NATO, and Latin America create a Union as a European Union but include all the western nations of the Atlantic Ocean?

This western union must include all the nations of the Americas and most of Europe, especially Western Europe.

Perhaps a world in which Brazil becomes more powerful and can establish itself as the power of South America, leading to a cooperation with the United States to inperdate a communist venezuela, Cuba and Bolivia, thus a more stable and prosperous Latin America.
Do Latin America, North America and Western Europe create a unified force to inperiorate the advance of influence of the Soviet Union and in future the advancement of Chinese and Indian influence?
 
Likely requires a massive POD likely going back to establishment of the US, plus different US latin American relations, and different latin American politics. It's doable, but a dream scenario. I can sort of imagine it happening if thing get really weird in 1800s latin america.

Ironically, would be more likely for pan-American union to happen in the future. Just the Americas in a EU situation is pretty easy, but EU + Americas is what makes it hard.

Defensive alliance - I can see a EU + Americas version happening easily. Already on the road to this, Colombia is on the road to joining NATO, more may happen in future.

Trade Zone - Pretty tough, but possible

Common Currency - maybe

No border similar to schengen zone - not likely at all between EU and Americas. A Pan-Americas travel zone is likely, but anything else isn't. Natural isolation of the Americas is in the Americas common interest. The US consitently shoots down a bridge to Russia despite Russia insistance because a land connection to the rest of the world means the rest of the world could easily get here.
 
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