Postwar currency and the "twenty pounds" controversy

Former Biafrans faced severe financial dislocation after the war, including the widely remembered policy that limited access to prewar bank savings. The issue is central to Igbo postwar economic memory, but it needs archival verification before being used as a standalone headline claim. Sources to strengthen: historical lead from [Historical Nigeria](https://historicalnigeria.com/the-20-policy-after-biafra/); academic lead from Sage [postwar banking reference](https://journals.sagepub.com/doi/10.1177/10323732251378529).