Concept:The final major armed opposition to British rule in Northern Nigeria ended with the military conquest of the main Sokoto Caliphate centres.Explanation:The British, led by Lugard, subdued the powerful emirates of Northern Nigeria.The conquest of Kano in 1903 was followed by the capture of Sokoto, the capital of the caliphate.With the fall of Sokoto, organised armed resistance in Northern Nigeria effectively ended.Answer:Kano and Sokoto