Shattering

The Shattering was a great disaster that occurred between the time periods of EverQuest I and II. What was thought to have happened was a great war erupted between the gods, causing the definite devastation of the face of Norrath. The continent of Antonica was ripped into pieces, and the continents of Faydwer, Velious, and Kunark were lost to the people of Antonica, mostly because of the deadliness of the seas that has only recently begun to abate.

From EverQuest 2 Wiki, a Wikia wiki.