Fire Nation

The Fire Nation is one of the world's six nations. Beneath the absolute reign of the Fire Lord (who is often one of the most powerful firebenders in existence), its territory expands across one medium-sized shaped landmass in the form of an island, multiple smaller islands, and an archipelago. A number of volcanoes dot the nation's land, including the famed volcano of Inferno City, which the city is built upon.

In size, the Earth Kingdom is the only nation larger than the Fire Nation, however the Fire Nation is economically and industrially the head of the world. Most modern technology is developed from or derived from Fire Nation tech, and its military is perhaps the most feared in the world, especially due to this.