Utilize the input text as a context reference, choose the right relationship between 'Eurozone' and 'Euro' from the options.
Options: owned by, member of, currency, legal form

By adopting the Euro that it could not print, what Greece gained instead was vast amounts of credit from banks that assumed Germany would cover Eurozone debts to protect the Euro (which, as we have explained in past books, is really the German Deutschmark in disguise as Germany’s third attempt in the 20th Century to conquer Europe….this time economically).
currency