Concept:The 1914 amalgamation created a unified colonial administration, which formed a new political structure distinct from the traditional systems.
Explanation:The amalgamation of Nigeria in 1914 was carried out by Lord Lugard.
It merged the Northern Protectorate, the Southern Protectorate, and the Colony of Lagos into a single administrative unit.
This unification established one central colonial government over the whole territory.
As a result, a new political system was introduced, replacing the separate traditional and regional administrative arrangements.
The traditional systems were not simply abolished outright, but the colonial superstructure became the dominant political framework.
Therefore, the main effect was the formation of a new political system under colonial rule.
Answer:D. It led to the formation of a new political system.