Chad contains approximately 200 distinct ethnic groups speaking over 120 languages. No single ethnic group constitutes a majority. The Sara people represent the largest group at roughly 30 percent of the population, concentrated in the southern regions near Moundou and Sarh. Arab groups collectively comprise about 12 percent, primarily in the Sahel and eastern zones. The Kanembu people inhabit areas around Lake Chad. The Toubou populations occupy the Tibesti Mountains and northern desert regions. The Ouaddai people dominate eastern territories around Abéché. French and Arabic serve as official languages, though French functions primarily in government and education while Chadian Arabic operates as a lingua franca across markets and trade routes.
The Sao civilization established settled communities around Lake Chad between 500 BCE and 1600 CE, leaving terracotta artifacts recovered at sites including Gaoui near N'Djamena. The Kanem Empire emerged around 700 CE east of Lake Chad, converting to Islam in the 11th century under Mai Hummay. The empire relocated westward in the 14th century after conflicts with the Bulala people, becoming the Bornu Empire. The Ouaddai Sultanate formed in eastern Chad during the 16th century with its capital at Ouara before moving to Abéché. The Bagirmi Kingdom emerged in the 16th century in the Chari River basin. These states competed for control of trans-Saharan trade routes carrying slaves, ivory, and ostrich feathers northward.
French military forces under Major Lamy defeated the Sudanese warlord Rabih az-Zubayr at the Battle of Kousséri in 1900, though Lamy died in the engagement. France declared Chad a colony in 1920 after suppressing resistance movements, particularly from Ouaddai sultan Dud Murra who fought until his death in 1911. The French concentrated development in southern regions producing cotton, neglecting northern territories. Chad gained independence on August 11, 1960 with François Tombalbaye as president. Tombalbaye attempted cultural revolution in 1973, renaming the country the Chadian Republic and forcing southern animist traditions on Muslims, which intensified regional tensions.
Northern rebel groups formed the National Liberation Front of Chad (FROLINAT) in 1966, beginning a civil war that persisted for decades. Libyan forces under Muammar Gaddafi occupied the Aouzou Strip in northern Chad in 1973, claiming historical rights to the uranium-rich territory. Tombalbaye died in a military coup in 1975. Hissène Habré took power in 1982, governing until 1990 when his former military commander Idriss Déby overthrew him in December. Habré later faced conviction by a Senegalese court in 2016 for crimes against humanity during his eight-year rule. Chad defeated Libyan forces in 1987 during the Toyota War, named for the pickup trucks Chad mounted with weapons. The International Court of Justice awarded the Aouzou Strip to Chad in 1994.
Idriss Déby governed Chad from December 1990 until April 2021, when he died from wounds sustained fighting rebels near the northern town of Mao. The military installed his son Mahamat Déby as transitional president within hours. Chad hosts over 400,000 refugees, primarily Sudanese fleeing conflicts in Darfur and more recently Sudanese civil war violence since 2023. The country contributes troops to international peacekeeping operations in Mali and the Lake Chad Basin, where it fights Boko Haram insurgents.
Oil extraction began in the Doba region in 2003 after completion of a 1,070-kilometer pipeline to the Cameroon coast. The World Bank participated in financing with requirements that revenues fund development, though governance disputes led the bank to freeze loans in 2006. Oil revenues represented 60 percent of government income by 2014. Cotton remains the primary agricultural export, grown predominantly in southern prefectures. Lake Chad has shrunk by 90 percent since 1963 due to irrigation demands and reduced rainfall, affecting fishing communities dependent on bangaou and other dried fish products.
Most Chadians practice subsistence agriculture or pastoralism. Southern populations cultivate millet, sorghum, groundnuts, and rice in regions receiving 600 to 1,200 millimeters of annual rainfall. The Sahel zone supports livestock herding, with groups moving cattle, sheep, and goats along seasonal routes. Northern desert zones sustain only scattered oasis agriculture at locations including Faya-Largeau. Markets across Chad operate on rotating schedules, with traders traveling between towns on designated days. Women dominate small-scale commerce, selling produce, dried fish, and prepared foods.