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
History of Zanzibar place to this day. The third pillar of the economy was slaves, which gave Zanzibar an important place in the Arab slave trade, the Indian Ocean equivalent of the better-known Triangular Trade. The Omani Sultan of Zanzibar controlled a substantial portion of the African Great Lakes coast, known as Zanj, as well as extensive inland trading routes. Sometimes gradually, sometimes by fits and starts, control of Zanzibar came into the hands of the British Empire. In 1890, Zanzibar became a British protectorate. The death of one sultan and the succession of another of whom the British did not approve later