The known universe was vast. In total, there were about 50,000 worlds under the Human Alliance's influence and they were scattered all over the three known realms. 90% of these worlds were considered lower worlds, 9% were the middle worlds, and only 1% were higher worlds.
With such numbers, the magus alliance decided to recognize prominent organizations to rule these worlds, to manage its people and resources. These organizations were known as factions.
These factions separated into 5 Grades based on their contribution and overall strength within the Human Alliance: Grade 1 to Grade 5, with those bearing the affix 'Grade 5' being the most affluent and authoritative factions of all.
The bigger the faction the more authority given to it and that determined whether the faction was allowed to be sovereign over a certain number of worlds.