Group of Islands off the coast of Taganyika. Before 1895, unoverprinted stamps of India were used in Zanzibar. Zanzibar was a British protectorate until December 10, 1963, when it became independent. A republic was established after a revolt in January 1964. Zanzibar joined Tanganyika April 26, 1964 to form the United Republic of Tanganyika and Zanzibar which was later renamed Tanzania (see Tanzania).