When did World of Warcraft start

A timeline for the Warcraft series of games:

Warcraft 'Orcs and Humans' was released in 1994,

Warcraft II 'Tides of Chaos' in 1995, addon 'Beyond the Dark Portal' in 1996

Warcraft III 'Reign of Chaos' 2002, addon 'The Frozen Throne' 2003

World of Warcraft in 2004, addon 'The Burning Crusade' 2007, addon 'Wrath of the Lich King' 2008