from Wikipedia Tanzania:
Tanzania IPA: /ˌtænzəˈniːə/, officially the United Republic of Tanzania (Swahili: Jamhuri ya Muungano wa Tanzania), is a country in East Africa bordered by Kenya and Uganda on the north, Rwanda, Burundi and the Democratic Republic of the Congo on the west, and Zambia, Malawi and Mozambique on the south. To the east it borders the Indian Ocean.
The country's name is a portmanteau of Tanganyika, the large mainland territory, and Zanzibar, the offshore archipelago. The two former British colonies united in 1964, forming the United Republic of Tanganyika and Zanzibar, which later the same year was renamed the United Republic of Tanzania.
In 1996 government offices were transferred from Dar es Salaam to Dodoma, making Dodoma the country's political capital. Dar es Salaam remains the principal commercial city.