How to register a company in "Botswana", a country of diamond mines and a sustainable economy?

Botswana’s economy is currently one of the fastest growing economies in the world, growing at an average of about 5% per year over the past decade. The growth of private sector employment during the first 30 years of the country’s independence was about 10 percent per year on average. After a period of stagnation at the start of the 21st century, Botswana’s economy has recorded high levels of growth, with GDP growth exceeding the 6-7% targets. Botswana has been praised by the African Development Bank for maintaining one of the world’s longest economic booms. Economic growth since the late 1960s has matched some of Asia’s largest economies. The government has consistently maintained a budget surplus and has large foreign exchange reserves. Compared to some of its neighbors, Botswana’s impressive economic record has been built on diamond mining, prudent fiscal policies and cautious foreign policy. Botswana’s economy is mostly dependent on diamond mining. Diamond mining accounts for 50% of the government’s revenue, mainly through a 50:50 joint venture with De Beers in the Debswana Diamond Company. Transparency International has considered this country as the least corrupt country in Africa in the corruption perception list. The country has the fourth highest gross national income per capita in terms of purchasing power in Africa and is above the global average.