Flag of Zanzibar yellow cloves was added to the flag. On 12 January 1964, John Okello overthrew the Sultan of Zanzibar and adopted a black-yellow-blue tricolour as the flag of the People's Republic of Zanzibar and Pemba. On 29 January, the country's flag was changed to a blue-black-green tricolour with a thin white stripe at the hoist. This design, which was based on the flag of the Afro-Shirazi Party, was the longest-lived of the post-independence flags and eventually formed the basis for the current flag. On 26 April 1964, Zanzibar united with Tanganyika to form the new country of Tanzania and Zanzibar's old
History of Zanzibar Portuguese Empire was the first European power to gain control of Zanzibar, and kept it for nearly 200 years. In 1698, Zanzibar fell under the control of the Sultanate of Oman, which developed an economy of trade and cash crops, with a ruling Arab elite and a Bantu general population. Plantations were developed to grow spices; hence, the moniker of the Spice Islands (a name also used of Dutch colony the Moluccas, now part of Indonesia). Another major trade good was ivory, the tusks of elephants that were killed on the Tanganyika mainland - a practice that is still in