The union was destroyed in 23,900 BBY following the end of the Tionese War, fought by the union against the Galactic Republic and the Hutt Empire. At that time, the former worlds of the union joined the Republic as a member sector.
- Geonosis and the Outer Rim Worlds
- The New Essential Chronology
- The Complete Star Wars Encyclopedia
- The Written Word on Hyperspace
- The Essential Guide to Warfare