The Collapse caused centuries of mass warfare on Giddah, including nuclear exchanges, orbital bombardment by nuclear-powered x-ray laser satellites, and so on.
The geology of the planet bears many visible scars from these wars, some visible from orbit
Radioactivity from fallout makes the planet uninhabitable except for brief visits
Locals in the system live in off-world colonies and have had no interstellar capability until being recently recontacted.
Some trade with other systems based on salvage from the surface or from abandoned stations and vessels drifting in the system