Read this: 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?
What is the answer? (If it cannot be answered, return "unanswerable")
Heinz Kloss