Something systematically killed off all sentient life in the galaxy, no one knows how or why.
This is the most well known timeline in the region.
During this Era, any sapient species that evolved were systematically exterminated. Who and Why are still unknown
Something systematically killed off all sentient life in the galaxy, no one knows how or why.
All the sapient life was gone, and new races evolved into sapience alone in an empty and cold galaxy.
The old nations of Pre-Stellar Earth found themselves launched into conflict, but after four bloody years when the dust had finally settled, no one had won. The old nations of the 20th and Early 21st century fell and a new 21st century rose, one beaten and bloody, but much wiser.