Latin eugenics was a scientific, cultural and political programme designed to biologically empower modern European and American nations once commonly described as 'Latin', sharing genealogical, linguistic, religious, and cultural origins.Latin Eugenics in Comparative Perspective offers a comparative, nuanced approach to eugenics as a scientific programme as well as a cultural and political phenomenon. It examines the commonalities of eugenics in 'Latin' Europe and Latin America. As a program to achieve the social and political goals of modern welfare systems, Latin eugenics strongly influenced the complex relationship of the state to the individual. Drawing on a wide range of primary and secondary sources in many languages, this book offers the first history of Latin eugenics in Europe and the Americas.