The Kulturkreis (roughly, "culture circle" or "cultural field") school was a central idea of the early 20th-century German school of anthropology that sought to redirect the discipline away from the quest for an underlying, universal human nature toward a concern with the particular histories of individual societies. It was the notion of a culture complex as an entity that develops from a centre of origin and becomes diffused over large areas of the world.
In cultural anthropology and cultural geography, cultural diffusion, as conceptualized by Leo Frobenius in his 1897/98 publication "Der westafrikanische Kulturkreis",is the spread of cultural items—such as ideas, styles, art,religions, technologies, languages—between individuals, whether within a single culture or from one culture to another.It is distinct from the diffusion of innovations within a specific culture. Examples of cultural diffusion include the spread of the war chariot and of iron smelting in ancient times, and the use of automobiles and Western business suits in the 20th century.