The monograph is devoted to the key problems of the history of the early Middle Ages, considered on the example of the Mediterranean regions of France. The author focuses on the social, economic and legal aspects of the transformation of ancient society into feudal. Changes in the natural-geographical, ethnic, demographic, spatial appearance of the region and in its economic life are also analyzed. The book is addressed to historians, as well as lawyers, economists, geographers and anyone interested in history and theoretical issues of historical science.