Final answer:
Media consolidation in the United States has led to a limited range of perspectives and viewpoints in the media.
Step-by-step explanation:
Media consolidation is a process in which fewer and fewer owners control the majority of media outlets, creating an oligopoly in the media marketplace. In the United States, just five companies currently control 90 percent of media outlets. These companies include Comcast, Disney, Time Warner, CBS, and Viacom. This consolidation of media ownership has a significant impact on the type of information to which the U.S. public is exposed, as it limits the range of perspectives and viewpoints available.