emäskulttuuri
Emäskulttuuri, literally "mother culture" in Finnish, is a term used in archaeology and anthropology to describe a hypothetical ancestral or foundational culture from which later regional cultures are thought to have been derived. It is not a single, agreed-upon archaeological culture, but a conceptual framework for understanding how certain traits, technologies, and social practices spread or changed across space and time.
In Finnish and Nordic prehistory scholarship, emäskulttuuri is used to frame debates about diffusion versus population
Limitations: The label can oversimplify regional variation; proving the existence of a specific "mother" culture is