Columbia subject headings:
Democracy--Europe, Western.
Democracy--Germany.
Democracy--United States.
Harvard subject headings:
Democracy--Europe--History--20th century--Congresses.
Democracy--United States--History--20th century--Congresses.
Europe--Politics and government--20th century--Congresses.
Representative government and representation--United States--History--20th century--Congresses.
United States--Politics and government--20th century--Congresses.
Princeton subject headings:
Democracy--Europe, Western.
Democracy--Germany.
Democracy--United States.