Maladominus

During the Third Age, Kingdoms, Maladominus was once a powerful nation of Fiends that stayed behind after the Second Age, Godswar. Even after the revolt, they survived the longest up until the end of the Age, as the final fiend was destroyed, his soul never finding its way back to the planes. For worse, the Iconian Empire used the cities of Maladominus for their slaves. After the Fourth Age, The Calamity, this place was shattered and many countries were formed, using the resources and cities as they pleased.