Concept:The 36-state structure of Nigeria resulted from the creation of six new states in 1996.Explanation:Before 1996, Nigeria had 30 states.General Sani Abacha created six additional states in 1996.This brought the total to 36 states.The six new states were Nasarawa, Ebonyi, Ekiti, Gombe, Bayelsa, and Zamfara.Answer:D. Sani Abacha.