And then world peace was achieved because nobody can figure out who they're at war with any more.
Naaah. Eventually someone wins and it becomes the USUSUSA. United States of United States of USAs. And then things go extrasolar and thousands of years down the line it finally ends with the formation of the USUSUSUSUSUSUSUSUSUSUSUSUSUSUSUSUSUSUSUSUSA (which I'll kindly refrain from spelling out), with sovereignty over the several of the nearby galactic clusters.
Which they promptly rename because who the hell actually
wants to use something like that as a self-descriptor? Seriously, tens of thousands of years of technological progress and the greatest advancements of humanity our existence has yet to see, and no one bothered to rechristen the damn thing something sensible? "Busy" only excuses so much