Eye of the Beholder
The War of Dreams
It is known that Dal Quor became coterminous with Eberron 40,000 years ago.
The Quori invaded Xendrik and fought the Giants. After years of battle it is thought that the Giants use the magic of the dragons to destroy the gate to Dal Quor. This leads to a series of natural disasters and plagues across the continent. The Giant civilization never recovers.
But is this what really happened?