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 visit in 1499 marked the beginning of European influence. In 1503 or 1504, Zanzibar became part of the Portuguese Empire when Captain Ruy Lourenço Ravasco Marques landed and demanded and received tribute from the sultan in exchange for peace. Zanzibar remained a possession of Portugal for almost two centuries. In 1698, Zanzibar became part of the overseas holdings of Oman, falling under the control of the Sultan of Oman. The Portuguese were expelled and a lucrative trade in slaves and ivory thrived, along with an expanding plantation economy centring on cloves. With an excellent harbor and no shortage of fresh