Mentifacts are VERY slow to change Level 2 - Sociofacts. This is the level at which mentifacts are expressed as institutions. Diffusion - this is cultural change caused by contact with other cultures. Mass media - the mass media is important because this is the way in which popular culture is transmitted through music, tv, films and advertising. Then mass production of goods allows us to purchase identical products across the country.
Malls are an even better example.
So subdivisions in California and Arkansas and North Carolina all look the same. Traditional culture is transmitted from one generation to the next through a process called oral tradition. There are several ways in which a culture can prevent this from happening. 1 - Isolation. The Amish are amongst the best examples of this strategy.