User:Garygo golob/Slovene–Serbo-Croatian language border

The Serbo-Croatian and Slovene languages are two closely related languages in the South Slavic dialect continuum. In the south and east, Slovene dialects gradually transition into Kajkavian and (to a lesser extent) Chakavian dialects of Serbo-Croatian. Therefore, the correct realisation of dialects as "Slovene" or "Serbo-Croatian" is difficult to determine. Over the time, various claims have been made regarding the evolution of dialects, ranging from considering all Pannonian dialects as "Serbo-Croatian" to assumption that Kajkavian would probably be considered a Slovene dialect had it not landed on the Croatian side of the border. Classification is often also politically influenced as it is often wished the dialects of the other language do not extend over the border. The problem with determining the border is nowadays also the speakers' self-identification as they often self-identify speaking other language due to living on the other side of the border despite linguistic research proving otherwise.

Criteria for determination
The determination of criteria is already a difficult task as both Proto-Slovene (Alpine Slovene) and Proto-Serbo-Croatian were never one single language but were already different from the start as they formed from different geolects.