David M Nicholas 
The Evolution of the Medieval World [PDF ebook] 
Society, Government & Thought in Europe 312-1500

This ambitious and wide-ranging study of the European Middle Ages respects the complexity and richness of its subject; always accessible, it is never merely superficial or over-simplistic. Stressing the long-term factors of continuity, evolution and change throughout, David Nicholas discusses the social and economic aspects of medieval civilization, and examines their links with political, institutional and cultural development. Designed for students and non-specialists, his book triumphantly meets the need for a comprehensive survey of the medieval world within the covers of a single authoritative volume.