The Reclamation Age
In the years following the Insanity War many heroes and legends spent time setting people free from Extraplanar Beings and other evil rulers using power to control others. This was a time of broken chains, and recovering knowledge.
Many great kingdoms and empires formed in this time, some which still exist to the present day.
The Cult of the Dragon rose up after finding an ancient ritual to resurrect Tiamat using the Primodia to release her spirit. As a result, once more the dragons have three gods, Bahamut, Gesh and Tiamat.