I know that Venezuela has petro, Japan has MUFG Coin. anyone please tell me, are there other countries that have created their own crypto besides Venezuela and Japan?
I think it's interesting, maybe we better call it a national cryptocurrency. do we need it for the future? and what is the important role of cryptocurrencies created by the state?
You overstate. Not all countries have their own in the world of crypto currencies. In many countries, crypto-currencies are prohibited by law.