The first South Slavic language to be written (also the first attested Slavic language) was the variety of the Eastern South Slavic spoken in Thessaloniki, now called See more

Torlakian dialects
Torlakian dialects are spoken in southeastern Serbia, northern North Macedonia, western Bulgaria, southeastern Kosovo, and pockets of western Romania; it is considered transitional … See more

Languages to the west of Serbia use the Latin script, whereas those to the east and south use Cyrillic. Serbian officially uses the Cyrillic script, … See more

The South Slavic languages constitute a dialect continuum. Serbian, Croatian, Bosnian, and Montenegrin constitute a single dialect within this continuum.
• South Slavic
Linguistic prehistory
The See more

The dialects that form the eastern group of South Slavic, spoken mostly in Bulgaria and Macedonia and adjacent areas in neighbouring … See more

History
Each of these primary and secondary dialectal units breaks down into subdialects and … See more

Eastern–Western division
In broad terms, the Eastern dialects of South Slavic (Bulgarian and Macedonian) differ most from the Western dialects in the following ways: See more