Zanzibar
Zanzibar (; ; ) is a semi-autonomous region of Tanzania. It is composed of the Zanzibar Archipelago in the Indian Ocean, off the coast of the mainland, and consists of many small islands and two large ones: Unguja (the main island, referred to informally as Zanzibar) and Pemba Island. The capital is Zanzibar City, located on the island of Unguja. Its historic centre is Stone Town, which is a World Heritage Site.
Julius Nyerere
Nyerere was also concerned by developments in Zanzibar, an island off of Tanganyika's coast. He noted that it was "very vulnerable to outside influences", which could in turn impact Tanganyika. Zanzibar secured independence from the British Empire in 1963, and in January 1964 the Zanzibar Revolution took place, in which the Arab Sultan Jamshid bin Abdullah was overthrown and replaced by a government consisting largely of indigenous Africans. Nyerere was taken by surprise by the revolution. Like Kenya and Uganda, he quickly recognised the new government, although allowed the deposed Sultan to land in Tanganyika and from there fly to London. At the request of the new Zanzibar government, he sent 300 policemen to the island to help restore order.