Diffusion

Diffusion is the movement of culture traits from one location to another.

Culture traits acquire new meanings as they move. There are McDonalds in both the US and China, but they mean different things in each place.

Diffusion is closely (but complexly) related to power

Next: Innovation

Recommended link: Man and His Culture a film from 1954. Check out the way the film deals with diffusion. It leaves out issues of power.