The largest power in the known galaxy, the Vangarian Empire has a presence in every populated sector in space, though their power is primarily clustered around what is known as the 'Core Sector', which is made up of the original systems and planets first settled by the ancient humans of Earth. With its legacy tracing back the governments of Earth, the Empire itself is a primarily human empire, consisting of roughly 60% human populations, though they are not against accepting aliens into the fold- so long as said aliens accept their human centric laws and governance. With its massive and sluggish bureaucracy, most within the Empire are content with maintaining the status quo.
With its staggering needs, the Empire has been rapidly expanding into the outer reaches of known space, constantly in search for Aura, the resource that provides the power for much of the technology base that gives them so much dominance. Imperial pathfinders regularly journey out into unknown space, looking for more potential resources.