Threats to Territorial Integrity, National Mass Schooling, and Linguistic Commonality

Why are some countries more linguistically homogeneous than others? We posit that the international environment in which a state develops partially determines the extent of its linguistic commonality and national cohesion. Specifically, the presence of an external threat of territorial conquest or externally supported secession leads governing elites to have stronger incentives to pursue nation-building strategies to generate national cohesion,...