The South Slavic languages are one of three branches of the Slavic languages. There are approximately 30 million speakers, mainly in the Balkans. These are separated geographically from speakers of the other two Slavic branches (West and East) by a belt of German, Hungarian and Romanian speakers. The first South Slavic language to be written (the first attested Slavic language) was the variety spoken in Thessalonica, now called Old Church Slavonic, in the ninth century. It is retained as a liturgical language in some South Slavic Orthodox churches in the form of various local Church Slavonic traditions.