History of Chad Africa's major language groupings south of the Sahara Desert (except Khoisan, which is not considered a valid genetic grouping anyway), i. e. the Afro-Asiatic, Nilo-Saharan and Niger–Congo phyla, originated in prehistoric times in a narrow band between Lake Chad and the Nile Valley. The origins of Chad's peoples, however, remain unclear. Several of the proven archaeological sites have been only partially studied, and other sites of great potential have yet to be mapped. At the end of the 1st millennium AD, the formation of states began across central Chad in the sahelian zone between the desert and the savanna. For
Geography of Chad same location. Similar temperature rises were also reported in Niger, which began to enter a famine situation. On 26 July the heat reached near-record levels over Chad and Niger. Area: <br>"total:" 1.284 million km² <br>"land:" 1,259,200 km² <br>"water:" 24,800 km² Area - comparative: <br>Canada: smaller than the Northwest Territories <br>US: slightly more than three times the size of California Land boundaries: <br>"total:" 6,406 km <br>"border countries:" Cameroon 1,116 km, Central African Republic 1,556 km, Libya 1,050 km, Niger 1,196 km, Nigeria 85 km, Sudan 1,403 km Coastline: 0 km (landlocked) Maritime claims: none (landlocked) Elevation extremes: <br>"lowest point:" Djourab Depression