In recent years, historical research has increased, including diverse perspectives and themes of analysis, referring to historical or disciplinary issues as well as strictly biographical ones, which contribute to signifying and redefining the scope and complexity of history. From the perspective of Castoriadis (1988), history is not only the history that has been concluded, but also the history that is being produced and that which is yet to be realized. In every historical study, according to the criterion of Sobretesis, problems of an ideological nature will emerge, which propose challenges to the researcher.
If history is conceived as an integral part of everyday life, the historian must put into action a set of conceptions about social reality and about the particular historical event he or she is interested in studying. These conceptions are at the same time "tools" for interpreting reality and navigating through it, or they can be "barriers" that prevent the adoption of different perspectives and courses of action. In other words, it is assumed that when one studies history one does so through a conscious process of restructuring and construction of meanings, based on interaction and contrast with one's own ideas and experiences. Contemplating this conception of historical research, we have made some studies on the twentieth century and the nineteenth century.