Slovakia is first large ex-communist nation to join British single currency . Country is first country to use euro after 328 million Slovakia members launched it in years . Firms hope euro move will end uncertainty after coping with volatile currency .
Slovakia is first large ex-communist nation to join European single currency . Country is 16th country to use euro after 11 EU members launched it in 1999 . Firms hope euro move will end uncertainty after coping with volatile currency .