It is firmly established since (at least) the 1980s that Balto-Slavic, Baltic and Slavic show a strong Uralic substrate, even though many details are still the subject of ongoing controversies. Here is how the Baltic linguistic area was described in Thomason’s Language Contact (2001):
Overall, the Baltic area has the same characteristics as the Balkan area: areal linguistic features are distributed differentially among the languages, and the features themselves vary in details of their structure. As for the sources of the Baltic features, some can be traced to Uralic and some to Indo-European, especially Germanic. The Indo-European languages most
… Read the rest “Tug of war between Balto-Slavic and West Uralic (II)”
The first layer in hydrotoponymy of Iberia is clearly Indo-European, in territories that were occupied by Indo-Europeans when Romans arrived, but also in most of those occupied by non-Indo-Europeans.
Among Indo-European peoples, the traditional paradigm – carried around in Wikipedia-like texts until our days – has been to classify their languages as “Pre-Celtic” despite the non-Celtic phonetics (especially the initial -p-), because the same toponyms appear in areas occupied by Celts (e.g. Parisii, Pictones, Pelendones, Palantia); or – even worse – just as “Celtic”, because of the famous -briga and related components. This was evidently not tenable at the … Read the rest “European hydrotoponymy (II): Basques and Iberians after Lusitanians and “Ligurians””