Taking a country into the past or another nation into the future is very common in Alternate History. But what would be the actual reaction to an ISOT event happening in modern times. Regardless of what exactly happened, if it happened in modern times than many people would take this as clear...
Biafra makes a humongous difference to West Africa. That means the most oil-rich and prosperous section of Nigeria becomes Spanish. This will also butterfly the Nigerian Civil War and will overall have massive effects on ECOWAS.
