Zeobium

Zeobium was one of the four great civilizations that existed on Armasta in the pre-diaspora Hem Period. The entire civilization along with the neighboring Zokar civiliztion was destroyed in the Hem Catastrophe approximately 4,500 years ago and it's surviving population of approximately 10,000 became part of the Ulanic Diaspora. During it's height, Zeobium's population was estimated to be in the hundreds of millions with some more liberal estimates placing it's peak population around one billion. The Ignian Calandar and Ulanic Calendar calandars use the date of the civilization's fall as year "0".