The World Wide Web
The World Wide Web was invented in the early 90's. It is made up of webpages which are created using Hyper Text Markup Language or HTML. It sounds like a mouthful but is rather quite simple.
The web consists of three key components: Your web browser, the internet and the servers where all the data is stored. The web browser sends messages through the internet in HTTP. The server responds by sending the required files, images, webpages, etc. back through the internet to the web browser. This is how you see what you see when using the internet.