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  Sputnik was the first artificial satellite to be launched by Russia in 1957. For more info go to this site at NASA.
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  Arpa was a place later named DARPA, It was responsible for lots of research on forming the internet.
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  The packet switching network allowed things to be transferred from computer to computer problem free. The ARPANet was the frist packet switching network.
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  The e-mail was handy for sending messages to other computers from your computer . It is another thing we use almost everyday.
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  The web browser allows you to be able to browse things with out nowing excatly what you are looking for. We use almost everyday.
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  The web browser soon became a product and very handy to communcicate.
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  Skype was a type of chat that you could see who you were talking to.It became very popular.
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  Facebook was a form of social media that was very popular by many people and still kind of is. It was created by Mark Zuckerberg.
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  Instagram is the newest social media website that is becoming more popular than Facebook. It was created by Kevin Systrom.