Ancient Draconic Secrets
Dragons ruled the world and after being weakened by attacks by Outsiders humans, elves, dwarves, orcs and other races overthrew the dragons and gained power.
Humanoid history begins about 2,000 years ago after the different races picked themselves up. Gods date back to around that time as human belief created and sustained them. Most of the gods were powerful slaves of the dragons that gained godhood after the dust settled.
In the lands the party is currently wandering, there are two main human kingdoms and 2 smaller kingdoms also run mostly by humans. There is a tribal culture of orcs in the mountains and deserts. A community of lizard men in the swamps.
Much is not known about the Elvish lands in the western forest or much about the dwarves lands in the northern mountains. Many elves and dwarves live in the human kingdoms.