Tanzania is in East Africa on the Indian Ocean. To the north are Uganda and Kenya; to the west, Burundi, Rwanda, and Congo; and to the south, Mozambique, Zambia, and Malawi. Its area is three times that of New Mexico. Tanzania contains three of Africa's best-known lakes—Victoria in the north, Tanganyika in the west, and Nyasa in the south. Mount Kilimanjaro in the north, 19,340 ft (5,895 m), is the highest point on the continent. The island of Zanzibar is separated from the mainland by a 22-mile channel.

Land area: 342,100 sq mi

Population (2012 est.): 46,912,768

Monetary unit: Tanzanian shilling

Arab traders first began to colonize the area in 700. Portuguese explorers reached the coastal regions in 1500 and held some control until the 17th century, when the sultan of Oman took power. With what are now Burundi and Rwanda, Tanganyika became the colony of German East Africa in 1885. After World War I, it was administered by Britain under a League of Nations mandate and later as a UN trust territory.

Although not mentioned in old histories until the 12th century, Zanzibar was always believed to have had connections with southern Arabia. The Portuguese made it one of their tributaries in 1503 and later established a trading post, but they were driven from Oman by Arabs in 1698. Zanzibar was declared independent of Oman in 1861 and, in 1890, it became a British protectorate.

Tanganyika became independent on Dec. 9, 1961; Zanzibar on Dec. 10, 1963. On April 26, 1964, the two nations merged into the United Republic of Tanganyika and Zanzibar. The name was changed to Tanzania six months later.

An invasion by Ugandan troops in Nov. 1978 was followed by a counterattack in Jan. 1979, in which 5,000 Tanzanian troops were joined by 3,000 Ugandan exiles opposed to President Idi Amin. Within a month, full-scale war developed. Tanzanian president Julius Nyerere kept troops in Uganda in open support of former Ugandan president Milton Obote, despite protests from opposition groups, until the national elections in Dec. 1980.

In Nov. 1985, Nyerere stepped down as president. Ali Hassan Mwinyi, his vice president, succeeded him. Running unopposed, Mwinyi was elected president in October. Shortly thereafter plans were announced to study the benefits of instituting a multiparty democracy, and in Oct. 1995 the country's first multiparty elections since independence took place.