Columbia subject headings:
Democracy--Cross-cultural studies.
Democratization--Cross-cultural studies.
Harvard subject headings:
America--Politics and government.
Democracy--America--History.
Democracy--Cross-cultural studies
Democracy--Europe--History.
Democratization--America--History.
Democratization--Cross-cultural studies.
Democratization--Europe--History.
Europe--Politics and government.
Princeton subject headings:
Democracy--Cross-cultural studies.
Democratization--Cross-cultural studies.