The Majeerteen Sultanate, or Majerteen Kingdom also known as Majeerteenia and/or Migiurtinia, was a Somali kingdom centered in the Horn of Africa. Ruled by Osman Mohamoud during its golden age, the sultanate controlled the areas corresponding to modern-day Puntland. The earliest mention of the kingdom is the late 15th or 16th century. The polity had all of the organs of an integrated modern state and maintained a robust trading network. It also entered into treaties with foreign powers and exerted strong centralized authority on domestic affairs. On April 7, 1889, it became a protectorate of Italy after a treaty. After a three year war, it was eventually integrated into the colony of Italian Somaliland.