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
Chad–India relations of mistreatment of Indian workers by local employers and authorities have been reported. Almost the entire Indian community in Chad was evacuated by the High Commission in Abuja following rebel attacks in N'Djamena in February 2008. The community returned to the city after the end of the violence. Chad–India relations Chad–India relations refers to the international relations that exist between Chad and India. The High Commission of India in Abuja, Nigeria is concurrently accredited to Chad. India also maintains an Honorary Consulate in N'Djamena. Chad has no diplomatic mission in India. Relations between Chad and India have witnessed significant growth