The two-&-a-half centuries after 1066 were momentous ones in the history of Britain. In 1066 England was conquered for the last time. The Anglo-Saxon ruling class was destroyed & the English became a subject race dominated by a Norman-French dynasty & aristocracy. This book shows how the English domination of the kingdom was by no means a foregone conclusion. The struggle for mastery in the books title is in reality the struggle for different masteries within Great Britain. The book weaves together the histories of England Scotland & Wales in a new way & argues that all three in their different fashions were competing for domination.