A framework was developed in 1967 by Heinz Kloss, abstand and ausbau languages, to describe speech communities, that while unified politically and/or culturally, include multiple dialects which though closely related genetically may be divergent to the point of inter-dialect unintelligibility.
Who developed the abstand and ausbau languages framework? In what year was the abstand and ausbau framework developed? What sort of unification in speech communities did the abstand and ausbau framework discuss?