(Based off of my previous fics of "FROM THE ASHES THE EAGLE RISES" and "THE FIFTH FEDERATION" and heavily inspired by the Roblox Game "Centaura" and Hearts of Iron 4 The New Order and Timeline-191.)
The Ultranationalist Republic of America was the Fifth Nation of Remnant, in the past, they were the United States of the Americas after winning the Great American Revolution in 1920 CE during Remnant's Great War.
In 1950 CE, after being plagued by an Economic Depression, the Great American Civil War begins between the Union, Confederates, Socialists, Nazis, etc. Atlas saw weakness and attacked, and all of these factors caused the Union to fall and be reduced to a rump state of the "American Federal Republic" on the Northeastern Coast while the rest of the Americas were partitioned, recolonized by Atlas, or fell apart into various warlord states.
In 1960 CE, the American Liberation War begins as various American Warlords, Rebels, and the Federal American Republic banded together into the Free American Revolutionary Liberation Front and attacked various Atlesian Colonies in the Americas, Confederates, and the Reich, however things fell apart as many abandoned the war effort due to political divisions, resource and supply issues, hidden agendas, and differing ideologies, and the American Liberation War ended in disaster on 1963 CE for the FARLF as the AFR was turned into a puppet and Atlas and its Allies in the Confederation and Nazis asserted their hegemony of the Americas.
In 1970 CE, the American Wars began as the American Black League lead by High Marshal Omar Bradley began a massive campaign and reconquered all of the Americas by 1995 CE, destroying their enemies, kicking out Atlas, destroying its puppets.
Now in 2000 CE, The American National Reclamation Government stands as a new power, will it reconcile with Remnant or will it go to war?
God proclaimed that one day the world would end in chaos in the Book of Revelation. And that day came. As the world crumbled in the ashes of the apocalypse, the United States of America somehow miraculously survived. When the dust settled, the now sole surviving country of the Old World re-established the rule of law in its land, and took in many survivors of the apocalypse. As new continents rose across the world, four kingdoms were established. Kingdoms that forgot about the Old World. Now alone, the US is left a choice: remain isolated or reveal themselves to the outside world?