Where does my mind go where I can’t follow? Right so let me explain this thing.  
The USFA is a relatively young country in the world of Equestria about 250 years old. In its its early history the eight states were at war each other until two ponies were able to stop the fighting Rossa and Serenity. They brought the states together into is unification period. But some time during the Unification period Serenity died by an unknown outside force causing the States to erupt in civil war between the Violencia Confederacy and the Unification faction. Which led to a wall being erected around it’s capital city Saddle Bay which stands to this day. When it was found out that Violencia was the one who killed Serenity and she was an outsider, the Confederacy surrendered. This led to the belief in the USFA that outsiders were harmful and the nation became isolationist for most of its history.  
It’s economy is driven by mineral mining and technology. Despite its isolationist ways it is quite advanced in a technological sense using magical generators powered by unicorn magic. These generators are also used in their military technology mainly their airships which don’t require the use of ballons. Sometimes the country gets it skirmishes with other nations that sail or fly to close with it’s territorial waters or airspace. Survivors of the encounters tell stories of the might, and skill of the Friesian military.  
Friesians are known for their fierce independence streaks, and hate relying on outsiders for help. They also have a massive distrust of foreigners. They’re fiercely loyal to each other and, allies. They tend to be quite on international affairs unless forced, or prompted.  
The States: 
Purosangue, capital city Maresdale, First State of the Union, holds capital Saddle Bay. 
Gureto Pon, capital city Uma, Second State of the Union, where military training is conducted 
Petalo, capital city Sole, Fourth State of the Union, Where technology is developed 
Briglia, capital city Regalia, Fifth State of the Union, Looks for underwater minerals along with ZaddleHorn. 
Tempesta, capital city Jet-stream Eighth State to of the Union, Where Pegisai military is conducted as well as airship ports 
Zaddlehorn, capital city Houfijzer Sixth State of the Union, Mineral mining as well as industry 
Golgothas, capital city Tailwind Third State of the Union, known for the arts 
Covallo, capital city Mustang City Seventh State of the Union, holds the entertainment industry.
 
Type of Government Representative Republic.