A semiarid transitional region of Africa lies between the Sahara Desert to the north and the humid savannas to the south. It extends from the Atlantic Ocean in the west to Sudan in the east, passing through parts of Senegal, Mauritania, Mali, Burkina Faso, Niger, Nigeria, and Chad. The region is characterised by grasslands, thorny shrubs, acacia and baobab trees, supporting pastoral livestock such as cattle, sheep and camels.
Which one of the following is being described?