In 1989, a London born scientist that started the idea of the "world wide web" with his document the "Information Management: The Proposal", something that he created to solve a problem to do with sharing information between the science divisions in other countries.
Image of the proposal.
With the proposal eventually getting green lit by Berners-Lee's boss, Mike Sendall, he started work writing the codes (HTML, URI, and HTTP) needed for the system to work, along with the server for it to function, and the web browser it runs on. As the popularity and potential arose with this new service, Berners-Lee thought it would be more beneficial to everyone-- he went to the company he worked at (CERN) to bring it to a wider audience. In April of 1993, the World Wide Web was available global.