
Originally Posted by
Anonymoose
Eorzeans have a very limited worldview and we know very little about the planet. We know that there's a series of three massive continents that, for the sake of this explanation, you can think of as being like Africa, Europe, and Asia. These are called the "Three Great Continents." The continent in Africa's position would be Aldenard, Aldenard and it's surrounding islands create a cultural sphere called the realm of Eorzea. In the northeast, there's a land bridge connecting us to the middle of the Three Great Continents, Ilsabard, which is in Europe's position. This is where the Garleans are from - Garlemald conquered the northern nations and solidified them into an Empire and then conquered the rest of the middle content. After that, they went east, to the last great continent, Othard, in Asia's position, and conquered most of it. A few independent and strategically worthless cities that are benign to imperial domination still exist on Othard, but for the most part the Far East is subjugated under Imperial rule.
So, back to your question: The Garleans obviously control a lot of land, being in control of two of the Three Great Continents. But there's islands of various sizes all around that seem to be presently free of Imperial rule. There's also the possibility that beyond the Three Great Continents there are others. Maybe there's something where you'd expect the Americas to be, to keep this metaphor going. We only know Othard and Ilsabard in abstract concepts, we don't even know what they look like, yet, so it's all Terra Incognita, and realistically speaking, the Garleans control only a fraction of it (but, still, a respectable chunk).