How far to the south in Eastern Europe did the Finno-Ugrians live?

Helsinki: Fennoscandia archaeologica XIV. 1997. — pp. 21-30The author advances a theory on the movement of the language boundary between the Finno- Ugric and Indo-European languages in eastern Europe during approximately the last 8000 years. The language boundary was presumably ’’originally” on the Black Sea and has moved northwards ever since. It first followed the spread of the change in the subsistence system (the emergence of agriculture and stock-breeding) and later the spread of eastern trade and church. The Baltic and Slavic languages developed as the result of the aboriginal Finno- Ugric populations’ shifting their language to Indo-European.