Pablo Sánchez León is a researcher at the CHAM - Centro de Humanidades at Universidad NOVA de Lisboa in Portugal. His research revolves around social conflicts in the Spanish monarchy from the late Middle Ages through the early modern period in comparative perspective. Benita Herreros Cleret de Langavant is a Professor of Early Modern History at the University of Cantabria in Spain. Her research delves into cross-cultural interactions and Indigenous resistance in the frontiers of the Iberian empires, focusing on northern Paraguay, Mato Grosso, and the Chaco regions.