I am trying to generate broad ideas as to how to create a society with a refresh start. Where most signs of an advanced society (slightly more advanced then today's society) are gone but withoutwithout causing complete ecological disaster which would result in the elimination of most species or humanity itself?
While attempting to satisfy the following:
- A maximum of 3000 years over which it can occur
- Remaining civilizations have regressed significantly
- Remaining civilizations have no true understanding of their ancestors
- Artifacts may still be found but are uncommon
- Almost all structures are gone
- Magic is present in this world (but I would like to avoid heavy reliance as an explanation)