Some important events and trends:
The Crusades
Islamic Golden Age
Angevin Empire
Early Mongol Invasion
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"
Crusades Subject Heading
Church history—Middle Ages, 600-1500
Jerusalem—History—Latin Kingdom, 1099-1244
Richard—I,—King of England,—1157-1199—Military leadership
Saladin,—Sultan of Egypt and Syria,—1137-1193
Islamic Golden Age Subject Headings
Islamic Empire—History—750-1258
Muslims—Mediterranean Region—History
Education—Iraq—Baghdad—History—To 1500
Baghdad (Iraq)—Intellectual life—To 1500
Angevin Empire Subject Headings
Great Britain—History—Angevin period, 1154-1216
Great Britain—History—12th century
France—History—Capetians, 987-1328
Great Britain—History—Norman period, 1066-1154
France—Politics and government—987-1328
France—History—Philip II Augustus, 1180-1223
Mongol Subject Headings
Genghis Khan,—1162-1227—Influence
Mongols—Europe, Eastern—History