Yet even during the post-World War II era of security and prosperity, some Europeans recoiled from the idea of a transfer of sovereignty. The consensus that many in the long line of supporters of European unification believed existed simply didn’t. And today’s euro crisis is the first serious crisis that Europe has faced in the years since, with nationalism beginning to re-emerge in full force.
In the end, Germans are Germans and Greeks are Greeks. Germany and Greece are different countries in different places with different value systems and interests. The idea of sacrificing for each other is a dubious concept. The idea of sacrificing for the European Union is a meaningless concept. The European Union has no moral claim on Europe beyond promising prosperity and offering a path to avoid conflict. These are not insignificant goals, but when the prosperity stops, a large part of the justification evaporates and the aversion to conflict (at least political discord) begins to dissolve.