The Great Dragon Civil War

400,000 years ago, in a time forgotten; in the world after the Primals being shattered, but before the foundations of Algorath, or other Kingdoms were founded; there was Tyalgirah.
Tyalgirah was the continent that came after the firing of the weapons from the Ancient ones; which shattered the land. During this time, Dragons came into the land and took it over; as well as enslaving the humanoids that lived amongst it. Kobolds themselves came into being after experimentation produced them, and were used as worker grunts to worship and lavish the Dragons. Dragonborne came from experimentation, as well as humanoid mating, and were used as Knights who would go out and spread the territory of the Dragonic rulers.
This went on for Thousands of years, with the Kingdom of Teserathoth becoming formed on the continent. Dragons appointed priests to rule over the peoples while they attempted to conquer more and more land. The humanoids of Teserathoth were hard workers that were either abused, or treated fairly, depending on the Dragon who controlled the region.
However, eventually, a lust for power broke out between the Dragons; causing a massive civil war. During this time, a rebellion from a small army of humanoids, who attempted to usurp the ruling Dragons. With the help of an Ancient Silver Dragon named Tormagal. He, with the help of a Goblin leader made an uprising towards the Cabal of Dragons, and slayed them; winning over the freedoms of the humanoids.
The Dragon Humanoid Sympathizers then departed from the continent; leaving it to be inhabited by the future humanoids. Though, mysteriously, no one knows what happened to the races after the disbandment of the Kingdom.