Columbia subject headings:
Harvard subject headings:
Empresses--Religious life.
Imperialism--Religious aspects.
Imperialism--Social aspects.
Rome--History--Empire, 30 B.C.-476 A.D.
Princeton subject headings:
Empresses--Religious life.
Imperialism--Religious aspects.
Imperialism--Social aspects.
Rome--History--Empire, 30 B.C.-476 A.D.