III The Central Middle Ages (900–1200).

Provides an overview of several books about the social history of Great Britain and Europe from 900-1200. Opinions on the Viking heritage of the British people in the book "The Norsemen in the Viking Age," by Eric Christiansen; Discussion of charters and politics in "English Episcopal Acta, 24: Durham, 1153 -1195," by M. G. Snape; Evolution of the British social structure explained in "Power and Border Lordship in Medieval France: The County of the Perche, 1000-1226," by Kathleen Thompson.