Wikipediaworld is a free online encyclopedia that allows users to access and contribute knowledge on a vast array of topics. Launched in January 2001 by Jimmy Wales and Larry Sanger, it operates on a wiki model, enabling anyone with internet access to edit its articles. As of now, Wikipedia boasts millions of articles in multiple languages, making it one of the largest and most comprehensive reference works in human history.

The foundation of Wikipedia lies in its collaborative nature. Users, known as "Wikipedians," can create and edit content, adding information, correcting errors, and improving the overall quality of articles. This open-editing model has allowed Wikipedia to grow rapidly and cover an extensive range of subjects, from history and science to pop culture and niche interests.