An oligopoly describes a market situation in which there are limited or few sellers. Each seller knows that the other seller or sellers will react to its changes in prices and also quantities. This can cause a type of chain reaction in a market situation. In the world market there are oligopolies in steel production, automobiles, semi-conductor manufacturing, cigarettes, cereals, and also in telecommunications. Often times oligopolistic industries supply a similar or identical product. These companies tend to maximize their profits by forming a cartel and acting like a monopoly. A cartel is an association of producers in a certain industry that agree to set common prices and output quot