text: Croatian has had a long tradition of Shtokavian vernacular literacy and literature. It took almost four and half centuries for Shtokavian to prevail as the dialectal basis for the Croatian standard. In other periods, Chakavian and Kajkavian dialects, as well as hybrid Chakavian–Kajkavian–Shtokavian interdialects "contended" for the Croatian national koine – but eventually lost, mainly due to historical and political reasons. By the 1650s it was fairly obvious that Shtokavian would become the dialectal basis for the Croatian standard, but this process was finally completed in the 1850s, when Neo-Shtokavian Ijekavian, based mainly on Ragusan (Dubrovnik), Dalmatian, Bosnian, and Slavonian literary heritage became the national standard language.
  Serbian was much faster in standardisation. Although vernacular literature was present in the 18th century, it was Vuk Karadžić who, between 1818 and 1851, made a radical break with the past and established Serbian Neo-Shtokavian folklore idiom as the basis of standard Serbian (until then, educated Serbs had been using Serbian Slavic, Russian Slavic and hybrid Russian–Serbian language). Although he wrote in Serbian Ijekavian accent, the majority of Serbs have adopted Ekavian accent, which is dominant in Serbia. Serbs in Croatia and Bosnia, as well as Montenegrins, use the Ijekavian accent.
  Bosnian is only currently beginning to take shape. The Bosniak idiom can be seen as a transition between Serbian Ijekavian and Croatian varieties, with some specific traits. After the collapse of Yugoslavia, Bosniaks affirmed their wish to stylize their own standard language, based on the Neo-Shtokavian dialect, but reflecting their characteristics—from phonetics to semantics.