Zanzibar the sheltered harbor located on the site of present-day Zanzibar City. The clove, originating from the Moluccan Islands (today in Indonesia), was introduced in Zanzibar by the Omani sultans in the first half of the 19th century. Zanzibar, mainly Pemba Island, was once the world's leading clove producer, but annual clove sales have plummeted by 80 percent since the 1970s. Zanzibar's clove industry has been crippled by a fast-moving global market, international competition, and a hangover from Tanzania's failed experiment with socialism in the 1960s and 1970s, when the government controlled clove prices and exports. Zanzibar now ranks a distant
Sultanate of Zanzibar be sovereign over that territory. The remaining ten-mile wide coastal strip (with the exception of Witu) remained a Protectorate under an agreement with the Sultan of Zanzibar. That coastal strip, remaining under the sovereignty of the Sultan of Zanzibar, was constituted as the Protectorate of Kenya in 1920. The Protectorate of Kenya was governed as part of the Colony of Kenya by virtue of an agreement between the United Kingdom and the Sultan dated 14 December 1895. In summary, the "Colony of Kenya" referred to the interior lands. The "Protectorate of Kenya" was a ten-mile coastal strip together with certain