Columbia subject headings:
Political science--History--To 1500--Congresses.
State, The--History--To 1500--Congresses.
Harvard subject headings:
Political science--Europe--History
Religion and politics--Europe--History.
Rome--Politics and government--284-476
Rome--Politics and government.
State, The--History
Princeton subject headings:
Political science--History--To 1500--Congresses.
State, The--History--To 1500--Congresses.