ANSWERS: 3
-
I've always presumed it was his own evil nature. Lust for power, frustration with the processes and restrictions of democratic government, and all that.
-
Darth Plagueis the wise. Palpatine spoke of him to Anakin in Revenge of the Sith, referring to himself in the third person, saying 'his apprentice killed him in his sleep'. The exact nature of him joining the dark Sith is unknown.
-
His own ego and thurst for power.
Copyright 2023, Wired Ivy, LLC

by 