Mexico returns ancient nigerian sculpture

I think there may be some confusion here.

Mexico did not return an ancient Nigerian sculpture. Nigeria is a country located in West Africa, while Mexico is a country located in North America. It's unlikely that Mexico would have possession of an ancient Nigerian sculpture in the first place.

However, it's possible that you may be referring to the repatriation of cultural artifacts from one country to another. This can happen when a country requests the return of cultural artifacts that were taken from them during colonialism or other historical periods.

If you could provide more context or clarify what you're referring to, I'd be happy to try and help you further!