Veridian IV

The M-class world Veridian IV was the fourth of six planets in the Veridian system. The planet had two moons, and, as of 2011, was a highly-advanced humanoid pre-warp civilization of 3.6 billion. Due to an unspecified near-extinction event, 99.8% of the entire population vanished, and civilization fell almost overnight. As of 2371, the planet was home to a simple a pre-industrial society with a population of only 230 million.