Columbia subject headings:
Democracy--Europe.
Europe--Politics and government--21st century.
European Union--Constitution.
Harvard subject headings:
Constitutional history--European Union countries
Constitutional law--European Union countries
Democracy--European Union countries
European Union countries--Politics and government--21st century.
International law--European Union countries.
Representative government and representation--European Union countries
Princeton subject headings:
Constitutional history--European Union countries.
Constitutional law--European Union countries.
European Union countries--Politics and government--21st century.
International law--European Union countries.