Nigeria's first post-indep constitution.

**The reasoning** Nigeria became independent on October 1, 1960, and needed its own constitution as a sovereign nation. The **Independence Constitution of 1960** was Nigeria's first constitution as an independent country — that's exactly what the question asks for. Before independence, all constitutions (Clifford 1922, Richards 1946, Macpherson 1951, and even Lyttleton 1954) were colonial constitutions imposed by Britain while Nigeria was still under colonial rule. **Why the wrong options tempt you** - **Clifford, Richards, Macpherson** — These were all important Nigerian constitutions, but they were *pre-independence* (colonial era). Students often pick Macpherson because it was the last major colonial constitution before the transitional ones, but "post-independence" means *after* October 1, 1960. **Quick takeaway** "Post-independence" = after 1960 independence, so only the Independence Constitution (1960) or Republican Constitution (1963) qualify — and the Independence Constitution came first!