Answer:
According to the Lord of the Ring, the Dwarves of Middle-earth were ruled by a King, who was usually the eldest and most powerful of the ruling family of Dwarves. The King was usually supported by a Council of Elders and Ministers. The Council had the power to appoint a regent when the King was absent or too young to rule. The Dwarves also had two hereditary lordships: the Lords of Durin and the Lords of the Iron Hills. These two lordships had their own councils and were granted special rights by the King.