[1] It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon and Nigeria to the southwest, and Niger to the west.
Due to its distance from the sea and its largely desert climate, the country is sometimes referred to as the "Dead Heart of Africa".
Chad is divided into three major geographical regions: a desert zone in the north, an arid Sahelian belt in the centre and a more fertile Sudanese savanna zone in the south.
Chad's highest peak is the Emi Koussi in the Sahara, and N'Djamena, the capital, is the largest city.
Since 2003 crude oil has become the country's primary source of export earnings, superseding the traditional cotton industry.