Translate the following English sentence to French:
"The EU must use European measures such as the introduction of the euro to prove its European competence to the outside world, because the accompanying counterfeiting industry, to name but one example, is an external matter."
Des mesures européennes telles que l'introduction de l'euro obligent l'UE à prouver sa compétence européenne vis-à-vis de l'extérieur car le faux monnayage qui accompagne cette introduction, par exemple, est une affaire extérieure.