Columbia subject headings:
Harvard subject headings:
Europe--Ethnic relations.
Europe--History--1989-
Europe--Politics and government--1989-
Europe--Social conditions--21st century.
European Union
European Union countries--Economic conditions--21st century.
Princeton subject headings:
Europe--Ethnic relations.
Europe--Politics and government--1989-
Europe--Social conditions--21st century.
European Union countries--Economic conditions--21st century.
European Union.