 "La société" exerted a profound influence on medieval scholarship in the second half of the twentieth century, placing the study of medieval feudal society on an entirely new footing.Working from the extensive documentary sources surviving from the Burgundian monastery of Cluny, as well as the dioceses of Mâcon and Dijon, Duby excavated the complex social and economic relationships among the individuals and institutions of the Mâconnais region, charting a profound shift in the social structures of medieval society around the year 1000.Duby argued that in early eleventh century, governing institutions—particularly comital courts established under the Carolingian monarchy—that had represented public justice and order in Burgundy during the ninth and tenth centuries receded and gave way to a new feudal order wherein independent aristocratic knights wielded power over peasant communities through strong-arm tactics and threats of violence.