A media conglomerate, media group or media institution is a company that owns large numbers of companies in various mass media such as television, radio, publishing, movies, and the Internet. According to the magazine Nation, "Media conglomerates strive for policies that facilitate their control of the markets around the world."
Media conglomerates exist in Europe and Asia, as well as Latin America. As a legal construct, a media conglomerate has become a standard feature of the global economic system since 1950.(Wikipedia)