Untermarch is a country made up of different clans. Many of them don't like each other, but given the country's barren lands, short supply food, and constant warring, working together against a common enemy - the other two kingdoms, Yorevale and Sambria - turned out to be the best option.
Nowadays Untermarch is a country as strong as the other two kingdoms. It's ruled by a hegemon, the strongest warrior chosen from among all the clans.