Vulborim is ruled by The Eternal Chieftain Kalsad. There is a Vulborish Council with selected councillors that give the Eternal Chieftain advice, but it is far from certain that he'll listen to the advice.
A Short History
Vulborim was established as a nation quite early, around AE 5. Only Asharia and Enarion are older as nations. The Drylands was inhabited by small groups of people, kind of like tribes, with no structure in common. As Kalsad arrived and decided to claim these people as his own, he chose the people living in the spot that today is Kabaduz. He fought their leader and won, making him their leader. It didn't matter how they'd chosen leaders before, the people didn't dare to question the apparently expert fighter who had just fought and killed their head of the tribe. A few tried to claim the spot by trying to beat this new person in a fight, but all of them were killed.
Kalsad then begun the slow work of fighting more leaders of communities close by. By AE 400 the whole area from Kabaduz to the southern coast of today's Vulborim was conquered and by AE 800 the area north of Kabaduz to the Wasteland had been absorbed into the new Vulborish nation.
Kalsad realized that Vulborim was large enough for one person to rule. If it became any larger now it was going to be the fall of his reign.
In AE 937 Kupria led by Queen Alenia Irevos tried to conquer Vulborim. Kalsad and his Vulborish fighters fought back, killing the queen and beating back the attempted occupation. Only Kalsad's decision to not expand Vulborim any further stopped him from trying to conquer Kupria as a part of Vulborim.