Sierra Leone , officially the Republic of Sierra Leone, is a country in West Africa that is bordered by Guinea to the northeast, Liberia to the southeast, and the Atlantic Ocean to the southwest. Sierra Leone has a tropical climate, with a diverse environment ranging from savannah to rainforests. The country covers a total area of 71,740 km2 (27,699 sq mi) and is divided into four geographical regions: the Northern Province, Eastern Province, Southern Province and the Western Area; which are subdivided into fourteen districts. The districts have their own directly elected local government known as district council, headed by a council chairman.
Freetown, located in the Western Area of the country, is the capital, largest city as well as its economic, commercial and political centre. Bo, located in the Southern Province of the country, is the country's second largest city and the second major economic and commercial centre. The country is a constitutional republic and with an estimated population of 6 million (2011 United Nations estimate).
Sierra Leone has relied on mining, especially diamonds, for its economic base. The country is among the largest producers of titanium and bauxite, and a major producer of gold. The country has one of the world's largest deposits of rutile. Sierra Leone is also home to the third largest natural harbour in the world, where shipping from all over the globe berth at Freetown's famous Queen Elizabeth II Quay. Despite this natural wealth, 70% of its people live in poverty.
Sierra Leone is a predominantly Muslim country, though with an influential Christian minority. Sierra Leone is ranked as one of the most religiously tolerant nations in the world. People are often married across ethnic and religious boundaries. Muslims and Christians collaborate and interact with each other peacefully. Religious violence is very rare in the country.
The population of Sierra Leone comprises about sixteen