After the water came

The world after the water came
In the year 0 a magical tragedy struck, mountains moved, the land split, and the land was flooded by the ocean. Most of the nations that existed before the water came were destroyed during the disaster or fell not long after. The Hermit Kingdom was the epicenter from where the disaster originated, people blame The Hermit Kingdom for what happened although they themselves deny that they had any part in it.

Map
Map from after the water came