Zuckerberg launched Facebook from his Harvard University dormitory room on February 4, 2004. He was assisted by his college roommates and fellow Harvard students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes.[7] The group then introduced Facebook to other college campuses. Facebook expanded rapidly, reaching one billion users by 2012. Meanwhile, Zuckerberg was involved in various legal disputes brought by others in the group, who claimed a share of the company based upon their involvement during the development phase of Facebook
