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Khan invented the first one, it allowed people to take photos, lead to widespread use of cell phones and not house phones
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A whole new device, created solely to store and play music.
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A form of social media, mainly family oriented, has games and you can post on others walls. It was created by Mark Zuckerburg
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The world's most popular video sharing website, lead to influencers and a new type of celebrity. Created by Jawed Karim, Steve Chen, and Chad Hurley.
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Was founded by Jack Dorsey, Biz Stone, Noah Glass, and Evan Williams, it changed the way we share information. It is a platform that can be used to get short texts out to a wide audience.