The area of Botswana was originally occupied by the Bushmen. Migrations from the north and east in the early 17th century have resulted in most of the present day population.
The area -- known as Bechuanaland -- was united in the early 19th century and by the end of the century had enlisted the aid of Britain, who made it a British protectorate. The northern part of Bechuanaland remained under Britain's wing until it became the independent Republic of Botswana in 1966.
Botswana is known as 'the Gem of Africa.'
Botswana on Wikipedia