A superpower of the Old Earth. During the mid 21st Century, the original United States of America (USA) restructured politically after years of government infighting and corruption. The new government placed more centralised control on each member state, and the name would be adjusted to reflect the nation's distinction from South American states, which had risen to power well into the 21st century: a subject of cool relations with the incumbent superpower of the Americas. Eventually, the USNA would form a military alliance, the Western Alliance, with the reformed EU; the European States, which had undergone a similar form of governmental centralisation.

The principles of government of the USNA would eventually leave a lasting legacy with the Unified Terran Nations 200 years later; and the ideals of freedom would be carried forward for another 3 millenium.