I think that to improve the economy of a country is not because the country has a large scale. and the economy of a country concerns many things. or maybe if a country legalizes bitcoin and makes rules for bitcoin and also takes taxes from bitcoin users. then bitcoin might have a small impact on that country. because the country gets additional income from bitcoin taxes.
and for users and holders of course bitcoin has provided many benefits, especially in economic matters. many people can achieve financial freedom after trading and investing in bitcoin.