Fallen Empire of Lindorei
One of the first and most successful (for a while) human civilizations, this Empire ultimately fell and gave rise to The Republic of Lagos, The Western City-State Confederacy, and The Kingdom of Tayos. The original Empire's campaign of elven subjugation and slavery shaped the modern geopolitical landscape.
Began as the Kingdom of Lindorei in the north, the nation was named after King Dach I, a handsome charismatic fighter who expanded his small village into a city-state, and eventually into a modest kingdom over the course of his 59 year life. King Dach I and II ruled diplomatically, both inside and outside the nation, though with little love of dwarves.
Later rulers became more and more outwardly aggressive, incorporating (by military action or threat) many other kingdoms under the "Empire of Lindorei" in the Year 0. The establishment of the empire was also to empower the new Emperor Unor to form the Dwarven alliances that he was making.