The new country start to adopt the bitcoin,because they learned how important is bitcoin to their economy.The new countries legalising the bitcoin to get taxes from from the trading made by their citizen.When the country people start to earn without paying taxes,after research the government of that country start to legalised it.After legalised mostly that country will start their own cryptocurrency to make sure they want additional income from the country own digital currency to the crypto traders.
But it is not easy to legalize Bitcoin in some governments, it will undergo several stages so that the regulations given can be appropriate.
In some developing countries Bitcoin or crypto is only a commodity tool and should not exceed it.
The reason may be that crypto is very volatile and still risky, and they cannot fully control it.
The application of taxes has certainly been applied to several local exchanges which of course must deposit the identity of all exchange users and no one will escape the imposition of income tax from crypto.
Whether or not Bitcoin or crypto is important for the country's economy must see how crypto impacts all sectors of the economy, whether users are more interested in crypto or not. It is only necessary to ensure that people become active crypto users and the economic turnover is fast enough.