South Africa is located in southern Africa, surrounded by Namibia, Botswana, Zimbabwe, and Mozambique. It has a population of over 49 million people and its top two languages are Afrikaans and English. Some of its major mountains include Njesuthi, Sentinel, and Cathedral Park. South Africa exports fruits, wine, wheat, and sugarcane. It also has livestock farming of animals such as sheep, cows, and ostriches. The climate varies from dry in the northwest to tropical in the south. Major inventions from South Africans include the CAT scan, the first heart transplant, and the first swimming pool vacuum cleaner.