Translate the following English sentence to French:
"Before we joined the European Union we Finns were promised that the EU would mean a more open policy on alcohol, that it would bring down the astronomically high prices of alcoholic beverages due to heavy taxation and that it would free up the retail market as well as break up the state monopoly on alcohol."
Avant notre adhésion à l'Union européenne, il nous a été promis que l'UE apporterait une politique des spiritueux plus ouverte, ferait baisser les prix extrêmement élevés en raison des fortes accises, libérerait la vente au détail et supprimerait le monopole de l'État sur l'alcool.