Some of the key topics in Late Antiquity and the Early Medieval period include:
Fall of the Roman Empire
The Carolingian Period
Vikings
Steppe Migration
The Rise of Islam
Presented below are some of the many subject headings that the library of Congress uses to identity these topics that you can use to find relevant books in WorldCat. To use these subject headings, either go to advanced search, go to "search Index" and select subject or subject phrase and enter the phrase; or in the search bar type in SU="subject heading"
Fall of the Roman Empire Subject Headings
Rome—History—Germanic Invasions, 3rd-6th centuries
Rome—Politics and government—284-476
Carolingian Period Subject Headings
Viking Subject Headings
Civilization, Viking—Scandinavia
Vikings—Social life and customs
Steppe Migrations subject headings
Rise of Islam Subject Headings
Islamic Empire—History—622-661
Islamic Empire—History—661-750
Islamic Empire—History—750-1258