The "Annales d'histoire économique et sociale" journal was founded in 1929 in Strasbourg by Marc Bloch and Lucien Febvre. These authors, the former a medieval historian and the latter an early modernist, quickly became associated with the distinctive "Annales" approach, which combined geography, history, and the sociological approaches of the Année Sociologique (many members of which were their colleagues at Strasbourg) to produce an approach which rejected the predominant emphasis on politics, diplomacy and war of many 19th and early 20th-century historians as spearheaded by historians whom Febvre called Les Sorbonnistes. Instead, they pioneered an approach to a study of long-term historical structures ("la longue durée") over events and political transformations. Geography, material culture, and what later Annalistes called "mentalités", or the psychology of the epoch, are also characteristic areas of study. The goal of the "Annales" was to undo the work of the "Sorbonnistes", to turn French historians away from the narrowly political and diplomatic toward the new vistas in social and economic history. For early modern Mexican history, the work of Marc Bloch's student François Chevalier on the formation of landed estates (haciendas) from the sixteenth century to the seventeenth had a major impact on Mexican history and historiography, setting off an important debate about whether landed estates were basically feudal or capitalistic.