Kosovo and Montenegro (1.7M and 0.7M habitants) are unilaterally using euro. Other (bigger) countries have their money pegged to euro : https://en.wikipedia.org

Kosovo and Montenegro (1.7M and 0.7M habitants) are unilaterally using euro. Other (bigger) countries have their money pegged to euro : https://en.wikipedia.org/wiki/International_status_and_usage_of_the_euro#Pegged_currencies https://en.wikipedia.org/wiki/International_status_and_usage...