Yaruba dynasty [SEP] dissolved or abolished
Yaruba dynasty
The Yaruba dynasty () (also spelled Ya'Aruba or Ya'arubi) were rulers of Oman between 1624 and 1742, holding the title of Imam. They expelled the Portuguese from coastal strongholds in Muscat and united the country. They improved agriculture, expanded trade and built up Oman into a major maritime power. Their forces expelled the Portuguese from East Africa north of Mozambique and established long-lasting settlements on Zanzibar, Mombasa and other parts of the coast. The dynasty lost power during a succession struggle that started in 1712
Nabhani dynasty
The Nabhani dynasty (or Nabahina dynasty; "ʾusrat banī nabhān"), members of the Bani Nabhan family, were rulers of Oman from 1154 until 1624, when the Yaruba dynasty took power. 
One of their most visible legacies is the Bahla Fort, a large complex of mud brick buildings on stone foundations which is registered as a UNESCO world heritage site.
Background.
After the early days of Islam, the tribes in the interior of Oman were led by Imams, who held both spiritual