Skyreach

Rather than a whole country, Skyreach is a coalition of various cities in the sky, existing ever since their sky project was deemed a success. As such, they are a younger nation born after the Fall. The various cities can be different in style, although they share the same technology used, and all of them will have a similar structure with important buildings such as the city hall and council of leaders in the same place. Being high up in the sky, the air is rather thin, which has been solved by gigantic oxygen pumps filtering and enrichening the air. Generally, they prefer to build high and with light materials.