Columbia subject headings:
Harvard subject headings:
Borderlands--Europe--History--20th century.
Borderlands--Social aspects--Europe.
Collective memory--Europe.
Emigration and immigration--History--20th century.
Europe--Relations.
European cooperation--History--20th century.
Group identity--Europe
Nationalism--Europe
Regionalism--Europe--History--20th century.
Princeton subject headings:
Borderlands--Europe--Social conditions.
Borderlands--International cooperation.
Ethnicity--Political aspects--Europe.
Europe--Boundaries.
Europe--Ethnic relations--Political aspects.
Regionalism--Europe.