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 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 since 2004, with many high level bilateral visits and interactions having taken place. Chadian Deputy Prime Minister and Foreign Minister Nagoum Yamassoum visited New Delhi in March 2005 to attend the first ever India-Africa Project Partnership conclave. He is the first Chadian government official to visit the country.