Whilst "sultan" is usually Employed in Islamic contexts, the individual ruler's adherence to Islam may change. Sultanate of Zanzibar: two incumbents (with the Omani dynasty) Because the de facto separation from Oman in 1806, the last assumed the title Sultan in 1861 for the official separation under British auspices;[citation necessary] https://johni218fqa8.wikiap.com/user