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Norwegians, Danes, Swedes and Finns all use a different currency. Finns and Sicilians do share a currency though, but all these countries have different immigration policies and regulations. I don't think you really know how the EU works.

Not currency! Only Nordic on euro is Finland

> Europeans are notoriously arrogant. It's a mockable combination.

Not a very rigorous economic argument - besides they also don't share an immigration policy, nor a single currency (Denmark)