Botswana (English: Land of the Tswana; , also UK:), officially the Republic of Botswana (Setswana: Lefatshe la Botswana, [lɪˈfatsʰɪ la bʊˈtswana]), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kalahari Desert. It is bordered by South Africa to the south and southeast, Namibia to the west and north, and Zimbabwe to the northeast. It is connected by the Kazungula Bridge to Zambia, across the world's shortest border between two countries. A country of slightly over 2.3 million people, Botswana is one of the most sparsely populated countries in the world. It is essentially the nation state of the Tswana people, who make up 79% of the population. About 11.6 per cent of the population lives in the capital and largest city, Gaborone. Formerly one of the world's poorest countries—with a GDP per capita of about US$70 per year in the late 1960s—it has since transformed itself into an upper-middle-income country, with one of the world's fastest-growing economies. The Tswana ethnic group were descended mainly from Bantu-speaking tribes who migrated southward of Africa to modern Botswana around 600 CE, living in tribal enclaves as farmers and herders. In 1885, the British colonised the area ... ()