The current countries in the Middle East and North Africa were all formed, or transformed, in the nineteenth and early twentieth century by processes of partitioning and territorialization propelled by European colonial expansion and local responses to those interventions. As the region’s political topography was remapped before and after the First World War, collective identities were activated, reimagined, and mobilized within and across these newly delineated units. From Northern Africa to the Iranian plateau, an array of nationalisms emerged over the course of this transformation, pairing notions of peoplehood and political sovereignty in new frameworks of identity. For the Middle East and North Africa, the related questions “what is a nation?” and “when is the nation?” are best answered by focusing on a third question: how has the nation (and nationalism) worked in the region over the past two centuries?