6 decades books

In the Urillian Empire, the Empress Xandra rules three-quarters of the planet Xren from her home in the capital of the Earth Continent. Both the fire and water peoples have fallen under her might after a series of wars stretching back three centuries. Earth elves, under Xandra''''s rule, have spread throughout the planet and established colonies, and are, by all accounts, enjoying what seems to be a prosperous and happy existence.