CHAD
Chad, officially the Republic of Chad, is a landlocked country in Central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon and Nigeria to the southwest, and Niger to the west. Chad is divided into multiple regions: a desert zone in the north, an arid Sahelian belt in the centre and a more fertile Sudanese savanna zone in the south. Lake Chad, after which the country is named, is the largest wetland in Chad and the second largest in Africa. Chad's highest peak is the Emi Koussi in the Sahara, and N'Djamena, (formerly Fort-Lamy), the capital, is the largest city. Chad is home to over 200 different ethnic and linguistic groups. Arabic and French are the official languages. Islam and Christianity are the most widely practiced religions. In the 7th millennium BC, ecological conditions in the northern half of Chadian territory favored human settlement, and the region experienced a strong population increase. Some of the most important African archaeological sites are found in Chad, mainly in the Borkou-Ennedi-Tibesti Region; some date to earlier than 2000 BC. Chad's constitution provides for a strong executive branch headed by a president who dominates the political system. The president has the power to appoint the prime minister and the cabinet, and exercises considerable influence over appointments of judges, generals, provincial officials and heads of Chad's para-statal firms. In cases of grave and immediate threat, the president, in consultation with the National Assembly, may declare a state of emergency. The president is directly elected by popular vote for a five-year term; in 2005 constitutional term limits were removed.