Zimbabwe is a landlocked country located in Southern Africa that borders the countries of Botswana, Mozambique, South Africa, and Zambia. The geography of Zimbabwe is mostly high plateau and mountains in the east. The government system is a parliamentary democracy. The chief of state is the Executive President and the head of government is the Prime Minister. Zimbabwe has a mixed economy in which there is limited private freedom but the economy remains highly controlled by the government. Zimbabwe is a member of the African Union (AU), African Economic Community (AEC), and the Common Market for Eastern and Southern Africa (COMESA).