Joseba Abaitua

One of historical linguistics' longest-standing mysteries is the relationship between Proto-Indo-European (PIE) and Proto-Uralic (PU). For over a century, linguists have debated why these two language families share striking similarities in vocabulary, including words for basic concepts such as "name," "seven," and certain kinship relations. Several explanations have been proposed: both families descending from a common ancestor (the Indo-Uralic hypothesis), prehistoric borrowing in either direction, or a combination of these processes. However, recent archaeological and archaeogenetic discoveries have provided a compelling new perspective. Around 3300 BCE, populations associated with the Afanasievo culture expanded eastward from the western Eurasian steppe into the Altai-Sayan region. Ancient DNA has confirmed their close genetic relationship with the Yamnaya horizon. Afanasievo is also widely considered the most plausible archaeological candidate for the ancestors of the Tocharian branch of Indo-European, suggesting that these migrants spoke an early Indo-European dialect ancestral or closely related to Proto-Tocharian. Meanwhile, recent archaeogenetic research has linked the prehistoric expansion of Uralic languages to Siberian populations and the Bronze Age Seima-Turbino networks, providing a plausible setting for contact between the two language families. In a 2022 study, linguist Rasmus G. Bjørn argued that several ancient lexical similarities could reflect Indo-European influence on early Uralic through the Afanasievo horizon, rather than common inheritance or borrowing in the opposite direction. This interpretation also offers a potential explanation for certain Indo-European-looking words found in other Inner Asian languages. Although the Indo-Uralic hypothesis remains debated, the convergence of linguistic, archaeological, and genetic evidence makes early Indo-European influence on Uralic an increasingly compelling possibility. Sources: Bjørn (2022), Indo-European loanwords and exchange in Bronze Age Central and East Asia. Zeng et al. (2025), Ancient DNA reveals the prehistory of the Uralic and Yeniseian peoples, Nature.