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
People's Republic of Zanzibar US citizens on the island, and a US Navy destroyer, the USS "Manley", arrived on 13 January. The "Manley" docked at Zanzibar Town harbour, but the US had not sought the Revolutionary Council's permission for the evacuation, and the ship was met by a group of armed men. Permission was eventually granted on 15 January, but the British considered this confrontation to be the cause of much subsequent ill will against the Western powers in Zanzibar. Western intelligence agencies believed that the revolution had been organised by communists supplied with weapons by the Warsaw Pact countries. This suspicion was strengthened