"At the core of this research proposal is the aim of reconstructing and understanding the nature, exact trajectories, mechanisms and implications of cross-cultural contact and transfers between Europeans and the native people of the Americas, focusing on, but not limited to, the Nahuatl-speaking zone of central Mexico. A major innovation of this project is to study this process of cross-cultural communication in its full historical depth, through the colonial and postcolonial eras up to the present day and encompassing different stages and types of contact. The meticulous and cross-disciplinary study of an extensive body of texts in Nahuatl (“Aztec”) and Spanish, complemented by present-day ethnolinguistic data, will make it possible to deduce and understand patterns across time and space in ways novel to existing scholarship, embracing both micro- and macroregional trends. The proposed research starts with identifying transfers in language, studied systematically through the creation of extensive databases, but leads to exploring the substance of cross-cultural transfer and the essence of developments, becoming a fundamental way of studying culture and its transformations. Thus, an important aim is the correlation of language phenomena with more general contact-induced culture change, including especially evolving forms of political, social and municipal organization in the native world, where the change is more salient. Breaking existing disciplinary boundaries in the humanities, the project embraces both indigenous and European perspectives, assuming that the innovation of studying both sides in a single framework and in the proposed time span is particularly promising in dealing with a notably two-sided, prolonged historical process. The complementary lines of research, native and Spanish, are expected to highlight and make understandable factors underlying and facilitating cultural convergence between them in different aspects of colonial life and beyond."