The Titans of the Earth waged war upon each other. And to gain power they created a variety of beings that could worship their greatness. Amongst these was the humanoids. As the ammount of elves, dwarves and men increased, so did the power of the Titans. They became so strong that they moved their War of cosmic scale in to the Heavens and above. This presented opportunity to the remaining beings. They started building and expanding. And within a short ammount of time they went in to the same pattern as their makers. Creating kingdoms and Empires, expanding, increasing in wealth and renown, trading, and ulitmately; waging war upon eachother.
This was a time of both divine and pragmatic demeanor. This was the Age of Empires.