Zanzibar accepts the British protectorate

On 14 June 1890 Sultan Ali bin Said signed a provisional agreement with the British consul Euan Smith accepting a British protectorate over Zanzibar. The Arabic article dates the formal acceptance to 7 November 1890. ^{1 2 3}

The English and German articles, citing Hertslet, agree on the provisional agreement of 14 June. The Arabic article dates the formal acceptance to another day. The museum records both days and attributes each date to the articles that give it, and does not choose between them. ^{1 2 3}

On 1 July 1890 the Anglo-German Heligoland–Zanzibar Treaty settled the coast: the sultan surrendered sovereignty over the coastal strip between the Umba and Rovuma rivers, and Zanzibar and Pemba passed under British protection. The formal cession of the strip is dated 28 October in the English article and 17 October in the Arabic article. ^{1 2 3}