Columbia subject headings:
Harvard subject headings:
Europe--History--1789-1900--Congresses.
Europe--History--20th century--Congresses.
Nation-building--Europe--Congresses.
Nation-building--United States--Congresses.
Nationalism--Europe--Congresses
Nationalism--United States--Congresses.
State, The--Congresses
United States--History--Congresses.
Princeton subject headings:
Europe--History--1789-1900--Congresses.
Europe--History--20th century--Congresses.
Nation-building--Europe--Congresses.
Nation-building--United States--Congresses.
Nationalism--Europe--Congresses.
Nationalism--United States--Congresses.
State, The--Congresses.
United States--History--Congresses.