The East African nation of Tanzania dates formally only from 1964, when it was formed out of the union of the much larger mainland territory of Tanganyika and the coastal archipelago of Zanzibar. The former was a colony and part of German East Africa from the 1880s to 1919, when, under the League of Nations, it became a British mandate until independence in 1961. It served as a military outpost during World War II, providing financial help, munitions, and soldiers. Zanzibar was settled as a trading hub, subsequently controlled by the Portuguese, the Sultanate of Oman, and then as a British protectorate by the end of the nineteenth century. Julius Nyerere would rule the country for decades. Following Nyerere's retirement in 1985, various political and economic reforms began.

Coordinates: 6°18′25″S 34°51′14″E / 6.307°S 34.854°E / -6.307; 34.854 Tanzania, officially the United Republic of Tanzania ( /ˌtænzəˈniːə/ Swahili: Jamhuri ya Muungano wa Tanzania), is a country in East Africa bordered by Kenya and Uganda to the north, Rwanda, Burundi, and the Democratic Republic of the Congo to the west, and Zambia, Malawi, and Mozambique to the south. The country's eastern border lies on the Indian Ocean.

Tanzania is a state composed of 26 regions (mikoa), including those of the semi-autonomous region of Zanzibar. The head of state is President Jakaya Mrisho Kikwete, elected in 2005. Since 1996, the official capital of Tanzania has been Dodoma, where Parliament and some government offices are located. Between independence and 1996, the main coastal city of Dar es Salaam served as the country's political capital. Today, Dar es Salaam remains the principal commercial city of Tanzania and the de facto seat of most government institutions. It is the major seaport for the country and its landlocked neighbours.

Idi Amin Dada (c. 1924 – 16 August 2003) was the military dictator and third President of Uganda from 1971 to 1979. Amin joined the British colonial regiment, the King's African Rifles in 1946. Eventually he held the rank of Major General in the post-colonial Ugandan Army and became its Commander before seizing power in the military coup of January 1971, deposing Milton Obote. He later promoted himself to Field Marshal while he was the head of state. While serving in the British Regiment he toured Kenya.

Amin's rule was characterised by gross human rights abuse, political repression, ethnic persecution, extrajudicial killings, nepotism, corruption, and gross economic mismanagement. The number of people killed as a result of his regime is estimated by international observers and human rights groups to range from 100,000 to 500,000. During his years in power, Amin shifted in allegiance from being a pro-Western ruler enjoying considerable Israeli support to being backed by Libya's Muammar al-Gaddafi, the Soviet Union and East Germany.