Nationalism is a new concept invented by the French. You can't say about Greece that it is/was a nation. The nationalization of Greece's city-states represents

Nationalism is a new concept invented by the French. You can't say about Greece that it is/was a nation. The nationalization of Greece's city-states represents a Greek tragedy, one that culminated in economic collapse. People focus on their group and they think that the same rules apply globally, which isn't the case.