Which is the unique discovery of modern technology in 20th century? std 8th history chapter 1 maharashtra board ANSWER THE FOLLOWING QUESTIONS SUB TOPIC :AUDIO VISUAL SOUR
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Answer: Photographs
Television plays a major role in entertainment and newspaper plays a major role in education and books are also responsible for the awareness of social activities. All these are possible with real photographs. A unique discovery of modern technology in 20th century is photograph.
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