FROM THE ASHES THE EAGLE RISES

The United States of Continental America is the Fifth Nation on Remnant, it was not a Kingdom, but it was actually a Republic, hidden in the North West located west of Atlas, the Dragon Continent, and Sanus, after gaining their independence from Mantle/Atlas during the Great War by revolting into what became the American Revolution and won, they isolated themselves from the outside world to the point of being thought of as a myth. 40 years after gaining their independence, it was a prosperous nation, but then the American Civil War began over Faunus-Slavery, the North wanted to abolish it while the South wanted to keep it thus seceding from the North and creating the Confederate States of Continental America, to end the Civil War, the Confederates blew up the Union's nuclear power plants and bombs to sabotage the North to make them surrender while keeping the South untouched but it backfired and caused a chain reaction all over the Continents, creating a huge wasteland and decimating the entire nation, the Confederates were destroyed and the Union was decimated, out of 2 billion people, only 1 billion survived, and the whole nation was plunged into a decade long Post-Civil War Anarchy.

It was now 80 years since they gained independence from Mantle/Atlas and 30 years since the Civil War that had created the wasteland, and 20 years since the Post-Civil War Anarchy ended, racism and bigotry were banned, and over than 1.5 billion people united.

What would happen when the rest of Remnant discovered this resilient nation?