many of the stories featuring the sith belong to a branch of the star wars canon now known as "star wars: legends," and previously as the "expanded universe" (or "eu"), consisting of a variety of media created prior to the advent of the 2015 feature film "". future authors and screenwriters are not required to honor all of the events depicted in this material, but the expanded universe has apparently remained a source of creative inspiration. the eu thoroughly details the schism between the dissident “dark jedi” and the jedi establishment that led to the creation of the sith order, as well a series of conflicts between the sith, jedi and the galactic republic spanning the millennia prior to the events of the "star wars" motion picture series, and certain events thereafter.