
One example came in 2051, when the United States began exerting pressure on Mexico, in order to protect their economic interests there, primarily the crude oil supply.

The series of conflicts known as the Resource Wars were but one symptom of an increasingly aggressive foreign policy adopted as a result of the increasing shortage of critical resources, including crude oil. The space exploration program petered out by 2034, when the last known manned mission to the Moon occurred, and remaining crewed rockets, such as the Delta IX, were converted into military ordnance as the global situation deteriorated. The flag was subsequently retrieved for display in the Museum of Technology. Another mission followed directly afterward, and on November 14 of that same year, Virgo III of Valiant 12 landed on the Moon. Valiant 11 mission members, Captain Richard Wade, Captain Mark Garris, and Captain Michael Hagen, became the first humans known to have walked on the surface of another celestial body. By the end of the decade, the United States had achieved victory in the space race, as the Virgo II lunar lander touched down on the surface of Earth's Moon on July 16, 1969. However, the claim was widely disputed by the Soviet Union and China. Intense research into space technologies and funding of the United States Space Agency, resulted in the pioneering flight of Defiance 7 on May 5, 1961, when Captain Carl Bell became the first known human in space.

The United States aggressively asserted its position as a major global power, competing with China in the mid-21st century, to subsequently become the world's foremost superpower. One of these known as the Enclave, a collection of paramilitary organizations scattered across post-War America, claims to be the legal continuation of the United States. Survivors went on to organize themselves on their own, creating new tribes, nation states, and other recognizable organizations. The American government controlled by the military-corporate oligarchs abandoned the country shortly before the nuclear exchanges began, there was no command and control structure remaining that could organize any recovery efforts, leading to the total or near collapse of society, economy, and its military. The United States ceased to exist after the catastrophic nuclear exchange known as the Great War. had around 400 million citizens, with a political system increasingly controlled by a military-corporate oligarchy with access to nuclear, biological, and chemical weapons, nuclear fusion and fission technology, orbital facilities, and other advanced technologies it had pioneered.

The United States of America (USA), commonly truncated as the United States, U.S., or simply America, was a pre- war federal republic, and one of the only two known nuclear superpowers remaining by the end of the Resource Wars in 2077.
