"Adventures in the chronology of the states of the Chad Basin".

It is the largest lake in the Chad Basin.

The range forms the northwest border of the Chad Basin.

Chad Basin, in the northern center of Africa.

The Chad Basin contained important trade routes to the east and to the north across the Sahara.

As of 2011, over 30 million people lived in the Chad Basin.

It extends in a northeasterly direction to the Chad Basin, and is about 150 km wide.

The province's other rivers are part of the Chad Basin.

Temperatures average 26 , except for the Chad Basin, where they climb to 28 .

At this time, eastern invaders entered the Chad Basin and conquered them.