Second, it is clear the internet allows us to get a lot of information easily. When I was in elementary school, I went to a library to get the data and information for my homework. Books, newspapers, and articles are were the main sources provide ing the data and information for with us at that time. Now, we can receive various information with real time through the internet social network sites and get a lot of data from old to new, one through the internet. It indicates the internet enables us to make use of various data and information and as a result, we can make there are many meaningful progresses in our life such as having distant learning, working at home, and so on. In conclusion, there are two main reasons why the internet is the greatest invention of in the 20th century. It is not only because the internet connects us in the world with real time, but also because the internet delivers us a lot of data and information.