Original: The idea for Nicktoons was formed in 1989 and on Sunday, August 11, 1991, the first Nicktoon, Doug, was aired followed by Rugrats and The Ren and Stimpy Show.
Simplified: The idea for Nicktoons was formed in 1989 and on Sunday, August 11, 1991, the first Nicktoon, Rugrats, was aired followed by Doug and The Ren and Stimpy Show.