The document summarizes major technological developments in media and communication from 1891 to 2008. It shows the evolution from radio broadcasts in the 1890s, to early television in the 1920s-1950s, the launch of the internet in the 1990s, and rise of social media in the 2000s. Key developments included the BBC's first radio broadcast in 1922, launch of television in 1936, invention of the computer in 1959, creation of the MP3 in 1998, and platforms like iTunes, YouTube, Facebook and Twitter after 2000 that helped digital media go mainstream.