Each invention usually comes along with its own inventor; however, the Internet - one of the greatest discoveries of mankind in the 20th century has no single inventor. It first started in the United States more than 50 years ago, and it kept evolved through time. For decades, scientists had been using it to communicate and share data with others. Many scientists and researchers had developed the best way of sending information from one computer to another. The very first computer was located in a laboratory at University of California, and it was about the size of a small house. By the end of 1969, there were just four computers that were connected to the Government’s Computer Network, but the network grew steadily during the 1970s. By the end of the 1970s, a computer scientist named Vinton Cerf had developed a way for all of the computers on all of the world’s mini-networks to communicate with one another. The Internet had a significant changing in 1991. That year, a computer programmer named Tim Berners-Lee introduced the World Wide Web: a “web” of information that anyone on the Internet could retrieve. Since then, the Internet has changed in many ways. Most recently, social networking sites like Facebook, Twitter, YouTube, Instagram etc have become a popular way for people of all ages to stay connected. Today, we use the Internet for almost everything, and it would be impossible for many people to imagine life without it.

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I think in the future they will invention driverless car. We will use electricity to drive it. And they can fly in the sky like helicopter. It is very convenient and clean. Ít will help environment more clean. But it very expensive and fast. It is easy to make accidents. What car do you prefer  : traditional car or driverless car