Anglo-Zanzibar War sovereign state and the start of a period of heavy British influence. Zanzibar was an island country in the Indian Ocean, off the coast of Tanganyika; today it forms part of Tanzania. The main island, Unguja (or Zanzibar Island), had been under the nominal control of the Sultans of Oman since 1698 when they expelled the Portuguese settlers who had claimed it in 1499. Sultan Majid bin Said declared the island independent of Oman in 1858, which was recognised by Great Britain, and split the sultanate from that of Oman. Barghash bin Said, the second sultan and Khalid's father, had
Sultanate of Zanzibar over the last of his dominions, Zanzibar. In 1698, Zanzibar became part of the overseas holdings of Oman after Saif bin Sultan, the Imam of Oman, defeated the Portuguese in Mombasa, in what is now Kenya. In 1832 or 1840, Omani ruler Said bin Sultan moved his court from Muscat to Stone Town on the island of Unguja (that is, Zanzibar Island). He established a ruling Arab elite and encouraged the development of clove plantations, using the island's slave labour. Zanzibar's commerce fell increasingly into the hands of traders from the Indian subcontinent, whom Said encouraged to settle on the