Concept:Colonial rule achievements include lasting administrative and political structures.
A proclamation is a formal announcement, not an institutional achievement.
Explanation:The creation of political regions was a major administrative reform introduced by the colonial government.
The Nigerian Council was also established as a governing body during colonial rule.
These were concrete structures that remained after colonial rule.
A proclamation, however, is simply a decree or public announcement issued by the Governor.
It is a tool of governance, not a recorded achievement like the councils or regions.
Therefore, proclamation is the option that does not qualify as an achievement.
Answer:C. proclamation