Comparison of Serbo-Croatian standard varieties

Standard Bosnian, Croatian, Montenegrin, and Serbian are different national variants and official registers of the pluricentric Serbo-Croatian language. == History == In socialist Yugoslavia, the language was approached as a pluricentric language with two regional normative varieties: Eastern (used in Serbia, Montenegro, and Bosnia and Herzegovina by all ethnicities, either with the Ekavian or the Ijekavian pronunciation) and Western (used in Croatia by all ethnicities, the Ijekavian pronunciation only).

Source: Wikipedia — Comparison of Serbo-Croatian standard varieties (CC BY-SA 4.0)