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Additional reading and useful trivia
https://en.wikipedia.org/wiki/History_of_the_Internet
https://www.internetsociety.org/internet/history-internet/brief-history-internet/
https://intetics.com/blog/a-simple-history-of-the-internet
https://www.history.com/topics/inventions/invention-of-the-internet
www.teachyourselfpython.com