Concept:Before colonial rule, the area called Nigeria was not one unified nation but a collection of separate communities.
Explanation:In the 18th century, present-day Nigeria consisted of many independent ethnic groups.
Each group lived within its own territorial boundaries.
There was no central government or shared bond connecting them.
These groups had different cultures, languages, and political systems.
Therefore, Nigeria was simply a conglomeration of ethnic groups rather than one nation.
Answer:C. Ethnic groups