The Anglo American Union of Systems or in shorthand simply known as the 'Union' is a collection of colony worlds who's population is derived from a former Sol system socio-economic bloc. A bloc who's core was based in the Americas but counted the former English commonwealths under its membership. As a result these cultures and peoples have carried over both language and their old cultural customs to the Sundala Starzone to form the AAU.

Techonlogically and socially it sits as the middle ground between the socialistic and state controlled mass of the Progressive Eurasian Colonies and the technocratic/corporate extreme of the East-Asian Conglom Alignment. One where democratic controls are still in play but the pursuit of profit is ever a motivation for its population.

The Anglo-American Union sits as humanity's middle child in the Sundala Starzone, walking a precarious path between sliding into a corporatocracy and maintaining the population's control of its own destiny. It controls four of the Marii's original gate systems in two arms that reach out into their territory and form the main branches of their gate network.

Of the four human powers it is third in population, second in military and fleet composition, and second in economic power.

The AAU was born during the steady creation of earth's socio-economic megablocs and the slow but steady death of the individual nation state. This process mostly caused by overpopulation, environmental degradation, and the beginnings of colonization of the solar system. It was the second such state to be formed after the birth of East Asia's Shanghai Protocol Strategic Alignment Organization or SPSA. Formed and finalized by the Treaty of London, it combined the former British commonwealth nations and the entirety of North America into a singular Federation stretching across the globe.

Due to the interstellar nature of the AAU it employs a three tier governmental system starting at the individual planet or habitat level and ending at the federal or multi-system level.

It is the 'middle child' of the various human powers in the Sundala Starzone with a balancing the interests of its corporate entities with that of the steady and healthy growth of its society without taking the extreme measure in either direction. As a result it tends to be the middling power when it comes to population sizes, military strength, and technological development. Like the other human powers it controls a portion of the Marii's gate network with a total of four of these systems under its control, additionally numerous human crafted gates have branched off this network in an effort to colonize the space surrounding both the Anglo and American arms.