The continent of Sephiroth had four major power regions. The center was the place where the royal capital was. In the north of the capital was the city of Legionsdare.
In the west was the city of Juridia and Mondstad was in the south of the capital.
These were the places where the strongest powerhouses of the continent were. Though the capital had the order and the demon rulers, the other three cities were also ruled by people known as pseudo order members.
In a real battle, they could almost match, they could rival the power of the members of the order. Even though only the cities had a name, they are around them were also named after the city.
That meant that all the villages, towns, and small cities around the city of Mondstad came to be known as the Mondstad region. To make the work easier, the region was divided into three states and three upper demon lords were in charge of the states.