María Estela Báez Villaseñor Doctor in Humanities-History from the Autonomous Metropolitan University (UAM) Iztapalapa Unit. Professor-Research of full time C in the Department of Philosophy at that university. Specialist in North America. She has taught North America History courses, both on the United States and Canada in various higher education institutions, both for degree and postgraduate. She has several publications about it. Among the same are the books without law. The colonization of western United States (UAM/Anthropos, 2015) and voices and experiences of those who forged a nation. Migration to the United States from the colonial era to the twentieth century (UAM, 2017), in co -authorship with Ángela Moyano Pahissa, as well as various articles and book chapters. In addition, she has collaborated in the coordination of collective works. She is a member of the National System of Researchers and has the PRODEP profile.