WWW:

The World Wide Web is a system of interlinked hypertext documents accessed via the Internet. With a web browser, one can view web pages that may contain text, images, videos, and othermultimedia and navigate between them via hyperlinks.

The web was founded between March of 1989 and december of 1990 by the english Tim Berners-Lee with the help of Robert Cailliau while they were working in the CERN in Ginebra, switzerland, and it was publiset in 1992.