Concept:The 1914 amalgamation unified British territories in Nigeria into one administration.Explanation:The two territories merged were the Colony and Protectorate of Southern Nigeria and the Northern Protectorate.Lord Lugard carried out this merger on January 1, 1914.Their union formed the Colony and Protectorate of Nigeria.Thus, the correct option is the one that lists both the Southern and Northern territories.Answer:B. Colony and Protectorate of Southern Nigeria and the Northern Protectorate.