This article discusses the impact caused by the expansion of History and academic research on archives, as well as changes in archivists' methods of work in Western Europe and North America. These changes have been spurred by new approaches to History and the rise of interdisciplinary approaches. The increasing diversity of interests among new historians and the development of new technologies for records reproduction have led to a demand for new postures from archivists in terms of tasks related to arrangement and the implementation of modern research instruments. The author provides insights as advice to professionals in countries that have not yet undergone this transformative process.