By about 1700, the ancestors of today's Batswana (citizens) were established as self-sufficient herders, farmers, and hunters. Their first contact with Europeans was through missionaries in the early 19th century. After hostilities broke out between the Batswana and expansionist Afrikaners from South Africa in the last quarter of that century, the tribal chiefs asked the British for assistance. The British responded and, in 1885, proclaimed a protectorate...