The map on the right is from February 1982. It is the TCP/IP test network map. What the Internet is, is a link that bridges all networks together. It was officially implemented in 1982 based on standardized protocols. The Internet unified all separate networks such as NPL and UUCP.
The Internet opened up these networks to commerce. The money earned by opening up to commercial activity was enough for the networks to lower their prices and allow schools to participate in more research.
The biggest application of the Internet is E-mail. For the first time people could communicate instantly through their computers. This allowed the spread of news to be more rapid.
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