B
BrnCow
The Internet is the result of what was called the ARPANET which was funded and built by the United States Department of Defense. Its purpose was to develop the very first computer network that would connect different universities and laboratories within the U.S. where people had big ideas and common interests. The network allowed them to share these interests. So the beginning of the Internet was a network of university and government computers, that eventually evolved into the Internet around 1976, when they merged the ARPANET with the Ethernet. Not very hard to imagine that there is wire-tapping going on today is it?.
Those pictures are of the ARPANET network as it evolved. In 1971 they sent the first e-mail, and by 1973 75% of the network traffic was e-mail, so its not surprising that everything is being tracked today. I am unsure of how or when they commercialised the Internet, I guess they did that by creating personal computers so that everyone and anyone could log onto the network from home. I do know that it was intentional, they gave us access to the Internet on purpose. Its a worthy research topic though. A simple wiki article on the ARPANET, gets you started.
https://en.wikipedia.org/wiki/ARPANET
I also highly recommend a documentary about this, if you interested, called [The Net: The Unabomber, LSD and the Internet], Its a really good documentary on the subject.
http://www.youtube.com/watch?v=doQAwLb-DEE
Now we all know Al Gore invented the internet...lol