Columbia subject headings:
Europe--Politics and government--1492-1648--Congresses.
Europe--Politics and government--1648-1789--Congresses.
Europe--Social conditions--Congresses.
Harvard subject headings:
Elite (Social sciences)--Europe--History--Congresses.
Europe--Politics and government--Congresses.
Europe--Social conditions--Congresses.
Patronage, Political--Europe--History--Congresses.
Princeton subject headings:
Europe--Politics and government--1492-1648--Congresses.
Europe--Politics and government--1648-1789--Congresses.
Europe--Social conditions--Congresses.