wikipedia :encyclopedia .Based free content encyclopedia - wiki which also includes contemporary and timely information."Free" means free to use, editing, copying and distribution.Wikipedia is a work developed collectively developed a large number of languages.
She managed and operated by the nonprofit, Wikimedia Foundation.
The beginning of the English language Wikipedia as a project that began on 15 January 2001.
Projects were added later in other languages. Additional data are concentration statistics pages of Wikipedia.