When a people have a means of civil disobedience.
Sources:
https://www.bbc.com/news/world-africa-56169917
https://www.reuters.com/business/crypto-trading-thrives-nigeria-despite-official-disapproval-2021-10-12/
https://techcrunch.com/2021/10/25/nigeria-follows-chinas-footsteps-in-piloting-digital-currency/
https://tradingeconomics.com/nigeria/money-supply-m0
https://www.coindesk.com/markets/2021/07/06/thriving-under-pressure-why-crypto-is-booming-in-nigeria-despite-the-banking-ban/