I think switzerland is the best country in the world for cryptography. Because they always create favorable conditions and welcome the bitcoin to the economy of their country.
In addition, the country's civilization will be very safe for cryptography and as well as safe for other currencies, of which the highlight is bitcoin.
I think that Japan and Korea, the two countries have accepted the BTC in payment, such as Korea has accepted the BTC in payment of motels, hotels, Japan, then accepted the BTC in the buy consumer machines in everyday life of each person.