Mercia

Mercia is one of the four human nations of Cybele. It is located in the northwest of the continent, on the Mariner Peninsula. Despite the two nations' synonymous origins, Mercia is historically hostile to Southumbria, its only land neighbor, with whom it has an ongoing territorial dispute over the Hebrides Islands. The nation is the world's greatest naval power, owing to its location and the relative insignificance of naval force in Cybele overall.