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Ethnicity and nationalism

Explanations focusing on nationalism are closely related to ethnicity-based explanations. Nationalism can be defined as the claim that the boundaries of a state should match those of the nation. According to constructivist accounts, for example, the dominant national identity is one of the central factors behind irredentism. In this view, identities based on ethnicity, culture, and history can easily invite tendencies to enlarge national borders. They may justify the goal of integrating ethnically and culturally similar territories. Civic national identities focusing more on a political nature, on the other hand, are more closely tied to pre-existing national boundaries.