Tanzania is the United Republic of Tanganyika and Zanzibar. The United Republic of Tanzania was formed in 1964 when Tanganyika on the African mainland united with the offshore Island State of Zanzibar.
The Republic lies on the east African coast between 1° and 11°45' South, and 29°20' and 40°35' east. Kenya and Uganda border it to the north; Rwanda, Burundi and Congo to the west, and Zambia, Malawi and Mozambique to the south.
Dodoma, its political capital is in the center of the country.
Dar Es Salaam, the economic capital is on the coast.
Tanzania covers an area of 945.166 sq. km (364.929 square miles). It is one of the largest countries in sub-Saharan Africa, larger than Kenya and Uganda combined. To put it in a European context, Tanzania is about 41/2 times the size of Britain; in an American context, it's about 11/2 times the size of Texas.
The total population of Tanzania is about 45 million (2012 estimate), of which roughly 1,303,569 live on Zanzibar. Apart from the towns the most densely populated areas tend to be the highlands, especially those around Lake Nyasa and Kilimanjaro.
There are estimated to be 120 linguistic groups in Tanzania None exceeds 10% of the country's total population. The most numerically significant groups are the Sukoma of Lake Victoria, the Hehe of Iringa, the Gogo of Dodoma, the Chagga of Kilimanjaro and the Nyamwezi of Tabora.