Gabon is a country located in Western Africa bordering Equatorial Guinea, Cameroon, Republic of the Congo, the Gulf of Guinea, and the Atlantic Ocean. Gabon has an extensive system of rainforests and savannas in the east and south. The government system is a republic with a multiparty presidential republic; the chief of state is the president, and the head of government is the prime minister. Gabon has a mixed economic system with a heavy reliance on oil, combined with relatively weak centralized economic planning and government regulation. Gabon is a member of the Economic Community of Central African States (ECCAS).