The modern nation-state, emanating from post-Westphalia Europe, is frequently characterized by linguistic homogeneity, if not always empirically then at least ideologically. A common language is ideologized as the glue of the nation, the emotional tie needed to foment a sense of national identity rising above parochial proclivities. Furthermore, the modern state has an interest in impelling linguistic homogeneity: ‘linguistic rationalization’ (Laitin 1988) allegedly promotes administrative an..