explain the details of mass media in 20th century
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Answer:
During the 20th century, the growth of mass media was driven by technology, including that which allowed much duplication of material. Physical duplication technologies such as printing, record pressing and film duplication allowed the duplication of books, newspapers and movies at low prices to huge audiences.
Answer: Developments in Internet-based communications and instructional technologies since the late 20th century provide previously unimaginable opportunities for people of all ages to tap the vast stores of world knowledge. Many of these technologies inevitably bring forth new forms of socialization. Contradicting the long-term historical movement away from apprenticeships or learning within a family setting and toward institutionalized education controlled by central governments, distance learning and other technological developments have opened the possibilities of learning in multiple ways at various sites—all under the control of individual learners. Technologies that promise to bring people together to share knowledge and life experiences, conversely, may also lead to the isolation of individuals and to the absence of face-to-face interactions among peers and teachers that are critical to preparation for adult roles as members of particular cultures and societies. Homeschooling has also raised concerns about childhood socialization, though consortia of homeschooling parents (whereby students can meet and attend classes with other home-based students) are increasingly common. The use of learning packages and degree programs exported from the metropolitan centres of North America, Europe, and the Pacific (notably Australia) to the countries of the Southern Hemisphere, while providing opportunity for advanced studies, may also include culturally inappropriate content, disregard for traditional knowledge, and the displacement of local languages by an international lingua franca, such as English.