Columbia subject headings:
Ethnic groups--Europe--History--To 1500.
Ethnology--Europe--History--To 1500.
Europe--Boundaries--History--To 1500.
Middle Ages.
Rome--Boundaries.
Harvard subject headings:
Ethnic groups--Europe--History--To 1500.
Ethnology--Europe--History--To 1500.
Europe--Boundaries--History--To 1500.
Holy Roman Empire--Boundaries.
Middle Ages.
Rome--Boundaries.
Princeton subject headings:
Ethnology--Europe--History--To 1500.
Europe--Boundaries--History--To 1500.
Holy Roman Empire--Boundaries.
Middle Ages.
Rome--Boundaries.