Serbo-Croatian in the context of "Great Eastern Crisis"

South Slavs are Slavic people who speak South Slavic languages and inhabit a contiguous region of Southeast Europe comprising the eastern Alps and the Balkan Peninsula. Geographically separated from the West Slavs and East Slavs by Austria, Hungary, Romania, and the Black Sea, the South Slavs today include Bosniaks, Bulgarians, Croats, Macedonians, Montenegrins, Serbs and Slovenes.

In the 20th century, the country of Yugoslavia (from Serbo-Croatian, literally meaning "South Slavia" or "South Slavdom") united a majority of the South Slavic peoples and lands—with the exception of Bulgarians and Bulgaria—into a single state. The Pan-Slavic concept of Yugoslavia emerged in late 17th-century Croatia, at the time part of the Habsburg monarchy, and gained prominence through the 19th-century Illyrian movement. The Kingdom of Serbs, Croats and Slovenes, renamed the Kingdom of Yugoslavia in 1929, was proclaimed on 1 December 1918, following the unification of the State of Slovenes, Croats and Serbs with the kingdoms of Serbia and Montenegro. With the breakup of Yugoslavia in the early 1990s, several independent sovereign states were formed.

Yugoslavism, Yugoslavdom, or Yugoslav nationalism is an ideology supporting the notion that the South Slavs, namely the Bosniaks, Bulgarians, Croats, Macedonians, Montenegrins, Serbs, and Slovenes, belong to a single Yugoslav nation separated by diverging historical circumstances, forms of speech, and religious divides. During the interwar period, Yugoslavism became predominant in, and then the official ideology of, the Kingdom of Yugoslavia. There were two major forms of Yugoslavism in the period, the first of which is the regime-favoured integral Yugoslavism, promoting unitarism, centralisation, and unification of the country's ethnic groups into a single Yugoslav nation, by coercion if necessary. The approach was also applied to languages spoken in the Kingdom. The main alternative was federalist Yugoslavism, which advocated the autonomy of the historical lands in the form of a federation and gradual unification without outside pressure. Both agreed on the concept of National Oneness developed as an expression of the strategic alliance of South Slavs in Austria-Hungary in the early 20th century. The concept was meant as a notion that the South Slavs belong to a single "race", were of "one blood", and had shared language. It was considered neutral regarding the choice of centralism or federalism.

The Yugoslavist idea has roots in the 1830s Illyrian movement in Habsburg Croatia, where a group of intellectuals saw the unity of South Slavs within the Austrian Empire or outside of it as a protection against Germanisation and Magyarisation. Cooperative talks began with Serbian politicians and working to standardise Serbo-Croatian as a common language with orthographer Vuk Karadžić, with limited success. Following the Austro-Hungarian Compromise of 1867, the concept was rivalled by Trialism. Control of the Balkans by the Ottoman Empire and Austria-Hungary prevented practical implementation of Yugoslavist ideas until the Ottomans were pushed out of the Balkans in the 1912 First Balkan War and Austria-Hungary disintegrated in the final days of the First World War. During the war, preparations for unification began in the form of the Niš Declaration of Serbian war aims, the establishment of the Yugoslav Committee to represent South Slavs living in Austria-Hungary, and the adoption of the Corfu Declaration on principles of unification. The short-lived State of Slovenes, Croats and Serbs was proclaimed in the South Slavic lands formerly ruled by the Habsburgs at the end of the First World War. Its leadership primarily wanted unification with Serbia on a federal basis, while Serbia preferred a centralised state.

Macedonian (/ˌmæsɪˈdoʊniən/ MASS-ih-DOH-nee-ən; македонски јазик, translit. makedonski jazik, pronounced [maˈkɛdɔnski ˈjazik] ) is an Eastern South Slavic language. It is part of the Indo-European language family, and is one of the Slavic languages, which are part of a larger Balto-Slavic branch. Spoken as a first language by around 1.7 million people, it serves as the official language of North Macedonia. Most speakers can be found in the country and its diaspora, with a smaller number of speakers throughout the transnational region of Macedonia. Macedonian is also a recognized minority language in parts of Albania, Bosnia and Herzegovina, Romania, and Serbia and it is spoken by expatriate communities predominantly in Australia, Canada, and the United States.

Macedonian developed out of the western dialects of the Eastern South Slavic dialect continuum, whose earliest recorded form is Old Church Slavonic. During much of its history, this dialect continuum was called "Bulgarian", although in the late 19th century, its western dialects came to be known separately as "Macedonian". Standard Macedonian was codified in 1945 and has developed modern literature since. As it is part of a dialect continuum with other South Slavic languages, Macedonian has a high degree of mutual intelligibility with Bulgarian and varieties of Serbo-Croatian.

The Serbs (Serbian Cyrillic: Срби, romanized: Srbi, pronounced [sr̩̂bi]) are a South Slavic ethnic group native to Southeastern Europe who share a common Serbian ancestry, culture, history, and language. They primarily live in Serbia, Bosnia and Herzegovina, Montenegro, Croatia, and Kosovo, with smaller communities in neighboring North Macedonia, Hungary, and Romania. They also constitute a significant diaspora with several communities across Europe, the Americas and Oceania.

The Serbs share many cultural traits with the rest of the peoples of Southeast Europe. They are predominantly Eastern Orthodox Christians by religion. The Serbian language (a standardized version of Serbo-Croatian) is official in Serbia, co-official in Bosnia and Herzegovina and Kosovo, and is spoken by the plurality in Montenegro.

Bosnian is the standard variety of the Serbo-Croatian language mainly used by Bosniaks. It is one of the three official languages of Bosnia and Herzegovina; a co-official language in Montenegro; and an officially recognized minority language in Croatia, Serbia, North Macedonia and Kosovo.

Bosnian uses both the Latin and Cyrillic alphabets, with Latin in everyday use. It is notable among the varieties of Serbo-Croatian for a number of Arabic, Persian and Ottoman Turkish loanwords, largely due to the language's interaction with those cultures through Islamic ties.

Serbian is the standard variety of the Serbo-Croatian language mainly used by Serbs. It is the official and national language of Serbia, one of the three official languages of Bosnia and Herzegovina, and co-official in Montenegro and Kosovo. It is a recognized minority language in Croatia, North Macedonia, Romania, Hungary, Slovakia, and the Czech Republic.

Serbian is based on the most widespread dialect of Serbo-Croatian, Shtokavian (more specifically on the dialects of Šumadija-Vojvodina and Eastern Herzegovina), which is also the basis of standard Croatian, Bosnian, and Montenegrin varieties. Reflecting this shared basis, the Declaration on the Common Language of Croats, Bosniaks, Serbs, and Montenegrins was issued in 2017. The other dialect spoken by Serbs is Torlakian in southeastern Serbia, which is transitional to Macedonian and Bulgarian.

Torlakian, or Torlak, is a group of transitional South Slavic dialects spoken across southeastern Serbia, southern and eastern Kosovo, northwestern and northeastern North Macedonia, and northwestern Bulgaria. Torlakian, together with Bulgarian and Macedonian, falls into the Balkan Slavic linguistic area, which is part of the broader Balkan sprachbund.

Torlakian is not standardized, and its subdialects vary significantly in some features. Yugoslav linguists traditionally classified it as an old Shtokavian dialect or as a fourth supradialect of Serbo-Croatian along with Shtokavian, Chakavian, and Kajkavian. Bulgarian scholars classify it as a Western Bulgarian dialect, in which case it is referred to as a Transitional Bulgarian dialect. According to UNESCO's list of endangered languages, Torlakian is a vulnerable distinct language.

A pitch-accent language is a type of language that, when spoken, has certain syllables in words or morphemes that are prominent, as indicated by a distinct contrasting pitch (linguistic tone) rather than by volume or length, as in some other languages like English. Pitch-accent languages also contrast with fully tonal languages like Vietnamese, Thai and Standard Chinese, in which practically every syllable can have an independent tone. Some scholars have claimed that the term "pitch accent" is not coherently defined and that pitch-accent languages are a sub-category of tonal languages in general.

Languages that have been described as pitch-accent languages include: most dialects of Serbo-Croatian, Slovene, Baltic languages, Ancient Greek, Vedic Sanskrit, Tlingit, Turkish, Japanese, Limburgish, Norwegian, Swedish of Sweden, Western Basque, Yaqui, certain dialects of Korean, Shanghainese, and Livonian.