Foreign relations of Zanzibar es Salaam and later Dodoma. Foreign relations of Zanzibar The foreign relations of Zanzibar refers to the relationships with other nations by the independent Zanzibari government which existed from 1856 to 1964, when the Zanzibar Revolution overthrew the ruling Sultan and unified the country with Tanganyika, forming Tanzania. In 1890, Zanzibar gave up formal control over their foreign relations to the British Empire. In 1906, the United States of America formalized a treaty in which they relinquished any claims to Zanzibar in favor of the British Empire. Following the unification and creation of Tanzania, Zanzibar's foreign relations were handled by
History of Zanzibar Somaliland. Zanzibar was famous worldwide for its spices and its slaves. During the 19th century, Zanzibar was known all over the world in the words of Petterson as: "A fabled land of spices, a vile center of slavery, a place of origins of expeditions into the vast, mysterious continent, the island was all these things during its heyday in the last half of the 19th century. It was the Africa Great Lakes' main slave-trading port, and in the 19th century as many as 50,000 slaves were passing through the slave markets of Zanzibar each year. (David Livingstone estimated that 80,000