I thought that perhaps both Slavic and Celtic languages form branches of the Indo-European family, and it seems that the geographic range of speakers of precurs

I thought that perhaps both Slavic and Celtic languages form branches of the Indo-European family, and it seems that the geographic range of speakers of precursors of these languages overlapped in iron-age Europe. https://en.wikipedia.org/wiki/Proto-Slavic_borrowings#Slavic_and_Celtic https://en.wikipedia.org/wiki/Proto-Slavic_borrowings#Slavic...