The movement of people and their languages on an unprecedented scale has been exerting increasing pressure on the model of the nation state and the ideal of socially and linguistically homogeneous societies. Sociolinguists analyzing recent changes in language policies and citizenship legislation have focused on the global-local interface, as well as issues of territoriality and group membership, thus connecting with cultural geographers and anthropologists who study the relationship between language and senses of place. Although frequently regarded as the domain of linguistics, language policies and practices are inseparable from issues of power and identity. Scholarly investigations have demonstrated the need to view the dynamics of language contact in relation to “external” linguistic dimensions that are central to the field of sociology, including social class, gender, and ethnicity, together with acts of compliance with or resistance to social and linguistic norms.