Formerly the British protectorate of Bechuanaland, Botswana adopted its new name at independence in 1966. More than four decades of uninterrupted civilian leadership, progressive social policies, and significant capital investment have created one of the most stable economies in Africa. The ruling Botswana Democratic Party has won every election since independence; President Ian KHAMA was reelected for a second term in 2014. Mineral extraction, principally diamond mining, dominates economic activity, though tourism is a growing sector due to the country's conservation practices and extensive nature preserves. Botswana has one of the world's highest known rates of HIV/AIDS infection, but also one of Africa's most progressive and comprehensive programs for dealing with the disease.