Serbo-Croatian
During the time of its membership in Yugoslavia, Slovenia represented the most viable economy in the alliance and many citizens from Southern republics were sent/came to work in the country, most notably those from Bosnia. In 1991, a short and bloodless secession from Yugoslavia and a subsequent quick transition from socialism to a market economy. Many people sought refuge in Slovenia during the Yugoslav wars that took place throughout the 90s and early 2000s in Serbia, Croatia, and Bosnia; as a result, the vast majority of immigrants speak Serbo-Croatian.
There is a small Serbo-Croatian speaking community in White Carniola, whose existence predates Yugoslavia. In four villages (Miliči, Bojanci, Marindol and Paunoviči), people speak the Eastern Herzegovinian dialect, with a strong influence of Slovene. People living there are descendants of Uskoks, guerilla warriors against Ottoman invasions.
Read more about this topic: Languages Of Slovenia