Concept:The Sokoto Caliphate was a large territory that required an effective system of governance.
Explanation:After the Fulani Jihad, the Sokoto Caliphate expanded to cover a vast geographical area.
To govern this huge territory successfully, it was divided into smaller administrative units called emirates.
Each emirate was headed by an Emir, who ensured local administration and order.
This division was primarily due to geographical reasons, because the caliph needed to exercise control over distant and widely spread regions.
It was not caused by the autocratic rule of Dan Fodio, economic factors, or the Jihad war itself.
Rather, it was a practical arrangement made necessary by the immense size and physical layout of the caliphate.
Answer:C. geographical reason.