Chad

The territory of present-day Chad has been inhabited since prehistory, with Lake Chad and the surrounding Sahel serving as a long-standing zone of contact between Saharan, Sudanic, and Central African peoples. Rock art in the Ennedi and Tibesti massifs, together with archaeological remains from the Sao civilisation south of Lake Chad, attests to settled communities active from at least the first millennium BCE. From the late ninth century onward, the region became the heartland of the Kanem Empire, founded by the Zaghawa and later ruled by the Sayfawa dynasty, which adopted Islam in the eleventh century and grew into one of the most influential trans-Saharan polities. After internal pressures forced its rulers westward in the fourteenth century, the successor state of Bornu retained authority over much of the basin while new sultanates emerged to the east.

By the sixteenth and seventeenth centuries, three Muslim kingdoms dominated the area now corresponding to central and eastern Chad: Kanem-Bornu in the west, Bagirmi around the Chari River, and Wadai in the east, each engaged in commerce, scholarship, and recurrent warfare across the savanna. These states drew wealth from trans-Saharan trade in salt, copper, livestock, and slaves, and maintained tributary relationships with smaller chieftaincies in the south. In the late nineteenth century the warlord Rabih az-Zubayr swept through the region from the Nile valley, conquering Bagirmi and Bornu before being defeated by French colonial forces at the Battle of Kousseri in 1900.

French expansion incorporated the territory into the federation of French Equatorial Africa, with Chad formally constituted as a colony in 1920 and administered from Brazzaville. Colonial rule was uneven, concentrating investment and Christian missionary activity in the cotton-growing south while leaving the largely Muslim north under indirect military administration. During the Second World War the colony, under Governor Felix Eboue, was the first French possession to rally to Free France, providing a base for Leclerc's Saharan campaigns. Chad attained internal autonomy in 1958 within the French Community and full independence on 11 August 1960, with Francois Tombalbaye as its first president.

The post-independence republic was quickly destabilised by tensions between the southern-dominated government and northern groups, and an insurgency that began in 1965 evolved into a protracted civil war drawing in Libya, France, and the United States. Tombalbaye was killed in a 1975 coup, and the following decades saw rule by Felix Malloum, Goukouni Oueddei, and Hissene Habre, the last of whom was overthrown in 1990 by his former commander Idriss Deby. Conflict with Libya over the Aouzou Strip was resolved by the International Court of Justice in 1994 in Chad's favour. A new constitution adopted in 1996 introduced multiparty politics, although Deby and his Patriotic Salvation Movement retained power through successive elections, while rebellions in the east and the spillover from the Darfur conflict continued into the 2000s.

Oil production beginning in 2003 transformed public finances and reinforced relations with France and the United States, even as Chad became a central partner in regional counterterrorism efforts against Boko Haram and Sahelian jihadist groups. Idriss Deby was killed in April 2021 during fighting with northern rebels, and a Transitional Military Council led by his son Mahamat Deby assumed power, culminating in a 2023 constitutional referendum and a 2024 presidential election that confirmed him in office. Chad today is a unitary presidential republic with its capital at N'Djamena.