Netheril

While the most known calendar of the realms is Dale Reckoning, There exists a far old measure of achivement, at least by humans.. the Neth. A group of small farming villiages that banded together for protection lead to an empire of human wizards, cities that floated across the sky, and a terrible, terrible arrogance that nearly stripped toril of its magic forever.

The First Age
Anauroch was at the time a paradise of rivers, forests, lakes and plains.. Netheril was unsuprisingly little more than a group of villiages(Fenwick, Gers, Gilan, Gustaf, Moran, Nauseef, and Janick) along one such lake. Soon after this alliance was named "Netheril" (after Nether the Elder who we can only assume to be the leader) the nation proceeded to remove the threats close by. Seeking to widen its scope of both power and land began expanding, this eventually lead the Eaerlanni elves to approach the humans. The elves taught the human's of this new alliance magic, and with talent unseen before(Possibly because of the shorter human life span) the humans learned arcane spells with a fevor. Each and every denzien of Netheril was taught the very basic of spellcasting, your average maid, wouldn't sweep the floor.. she knew a cantrip to make the broom sweep the floor. Those who excelled at the arts of magic became know as Arcanists, a rapidly rising political faction that was second only to the nobelity of the nation.