The cement industry is an example of an undifferentiated oligopoly. The automobile industry is a differentiated oligopoly. Which of these two is more likely to advertise? Why? The South American cocaine industry consists of several ‘‘families’’ that obtain the raw material, refine it, and distribute it in the United States. There are only about three large families, but there are several small families. What market structure does the industry most closely resemble? What predictions based on the market structure models can be made about the cocaine business? How do you explain the lack of wars among the families?