Frontiers of countries are often identical with language boundaries, so language boundaries seem to be of highly political importance and vice versa. Does anybody know which scientific department investigate the creation, history and dynamics of language boundaries? What do you think, should research about language boundaries be done by historians, political scientists or linguists?
language boundaries
Historical frontiers were related first to ethnicy, then to fiscal boundaries (realms, empires). Since the 19th century nationality and thereby culture and language are more and more important (see actual Tibet problem). Today frontiers are mostly defined by social security systems, language is less important...
Are there any linguistic boundaries inside the USA? How do they evolve?
Fortunately US are isolated, so all their idiocy is contained. I wish it was the same for Europe