Question: was the matrix originally supposed to be a trilogy

Answer: Yes, The film's mainstream success had backed up the initial idea of making a trilogy. The sequels, The Matrix Reloaded and The Matrix Revolutions, were filmed simultaneously during one shoot (under the project codename ``The Burly Man''), and released in two parts in 2003. They tell the story of the impending attack on the human enclave of Zion by a vast machine army. Neo also learns more about the history of the Matrix and his role as The One. The sequels also incorporate more ambitious action scenes and visual effects.