In order for diffusionism to work as envisioned by the British and German schools, adherents had to assume or maintain all of the following except:

A) that the cultural traits that were diffused were part of the technological dimension of the society

B) that cultural traits in the same geographical region would inevitably spread from one society to another

C) racist assumptions about the inherent inferiority of different non-Western peoples

D) that some peoples were not sufficiently innovative to develop their own cultural traits.