In the 1990s, the Julian (Giulian) Region that includes the cities of Trieste and Gorizia and the Istrian peninsula attracted the renewed attention of scholars for its qualities as a space in which both cosmopolitanism and nationalist polarization had flourished in the late Habsburg era. Although a healthy debate exists as to the degree to which forms of interethnic tolerance remain a feature of everyday life in these areas, most historians agree that this region underwent a series of increasing nationalizations (Italian, Slovene, Croatian, and Yugoslav) that began in the nineteenth century and culminated in the partisan anti-Fascist uprising and massive demographic shifts after World War II, as the majority of Istria's “Italian” population (together with a significant number of individuals self-identifying as Slovene or Croat) migrated from the territory that passed from Italian to Yugoslav control. The historiography of the modern era in the Julian Region has thus confirmed many of the assumptions made by nationalist activists along this classic “language frontier” about the inevitability, exclusivity, and irreversibility of ethnonational identifications.