Original sentence: The name of the language is a subject of some controversy in Croatia, Serbia and the parts of Bosnia and Herzegovina inhabited by Serbs and Croats where it is alternatively referred to as Bosniak (also spelled "Bosniac"; Bošnjački) mostly by nationalists
Edited sentence: The name of the language is a subject of some controversy in Bosnia and Herzegovina, Croatia, and Serbia  and is alternatively referred to as Bosniak (also spelled "Bosniac"; Bošnjački) mostly by Serb and Croat nationalists