Columbia subject headings:
European Union countries--Economic integration--Political aspects.
European Union countries--Politics and government--21st century.
Political parties--European Union countries.
Protest movements--European Union countries--History--21st century.
Right and left (Political science)--European Union countries--History--21st century.
Harvard subject headings:
European Union countries--Economic integration--Political aspects.
European Union countries--Politics and government--21st century.
Political parties--European Union countries
Protest movements--European Union countries--History--21st century.
Right and left (Political science)--European Union countries--History--21st century.
Princeton subject headings:
European Union countries--Economic integration--Political aspects.
European Union countries--Politics and government--21st century.
Political parties--European Union countries.
Protest movements--European Union countries--History--21st century.
Right and left (Political science)--European Union countries--History--21st century.