[AyumiBee]

The EU started to make some kind of big country (there isn't borders in the European Union, but honestly nearly nothing has changed... For example my country is far far way from the french or english ect economy. Also the Eu told Hungary to not make that much wine (hungarian wines are famous- Egri Bullblood or Tokaji Aszu)- it would be bad for the French..
And for one nation we would need one language there's already esperanto, few years ago people learned it honestly it's not popular at all. So I don't think that we can become one nation we would still chew on our past. For example even if you live in an other country you would still say yes I'm hungarian I'm not slovakian they just attached this part of the Hungarian country to Slovakia but I think it should be part of Hungary and not Slovakia (after Trianon- I.WW)
So I don't think that we can make it but I love our planet's colorfulness so I would never wish for one nation.