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Bitcoin will be operated without the control of the central bank or government of that country. It is capable of preventing inflation. Because it is not possible to print any additional bitcoin. For this, the people of that country can do their transaction easily, transparently & faster and will have the potential to reduce corruption rates. However, when all transactions are completely dependent on online, it will be mandatory for all of the country to gain skills in this regard.
Finally, if Bitcoin is the currency of a country, it will start a new economic age of that country. This will improve the economy of that country and some damage. So these positive and negative aspects of that country should be noticed equally.
This is the reason why bitcoin is considered the money of the future, because you can use bitcoin as an investment asset or as a currency, El Salvador has already made bitcoin an alternative currency in their country, but because the value of bitcoin is fluctuating, even the smallest unit of bitcoin (satoshi) has experienced drastic increases and decreases in value. It's not that I'm skeptical of bitcoin, but it takes a lot of consideration for a country to make bitcoin their alternative currency, it's not as easy as turning the palm of your hand because usually a country's currency must have a stable value.