Spread of Transeurasian languages was due to agriculture

By triangulating data from linguistics, archaeology and genetics, a new study by an international team of researchers proposes a 'Farming Hypothesis' for the spread of Transeurasian languages, tracing the origins of Japonic, Koreanic, Tungusic, Mongolic and Turkic to the movements of Neolithic millet farmers from the region of the West Liao River.

source https://www.sciencedaily.com/releases/2021/11/211110131625.htm