Postage stamps and postal history of Chad

This is a survey of the postage stamps and postal history of Chad. Chad is a landlocked country in central Africa 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 three major geographical regions: a desert zone in the north, an arid Sahelian belt in the centre and a more fertile Sudanese savanna zone in the south. First mails Regular mail service in Chad began soon after the French occupation of the area, with a post office established at Fort-Lamy in 1905. Additional offices were opened at Abeche (1909), Amm et Timan (1910), Ati (1909), Bousso (1910), Fada (1920), Faya-Largeau (1920), Mandjafa (1910), and Tchekna (1910). Mail used stamps of French Congo until 1915, then stamps of Ubangi Shari, whose overprints read "OUBANGUI-CHARI-TCHAD".