This chapter ties together the narratives presented in the book’s three substantive chapters to provide an overview of the conceptual history of ethnicity. The chapter then unpacks the ideological functions performed by this concept in service of the international order, and recaps how the emergence of ethnicity contributed to both the negation and preservation of imperial hierarchies. Drawing inspiration from Carl Schmitt’s discussion of ‘nomos’, the chapter concludes by proposing a speculative notion of ‘ethnos’ as the foundational ordering of beings.