I believe Singapore is using technological innovation to further develop its economy, despite its smaller land area, Singapore has managed to overtake some resources rich countries like mine, by using technological innovation thats why I'm, was not surprised if Singapore has been adopting Bitcoin as form of payment in their country because Bitcoin and cryptocurrencies are fruits of technological innovation. Anyway, El Salvador has used a different approach while adopting Bitcoin because their government is venturing into Bitcoin as a form of investment.