Under the Maastricht Treaty, the countries of Europe also opted for the model of a European central bank alongside national central banks with a large degree of independence.
According to this idea, once the central bankers have been appointed by the political authority - because, fortunately, they do not coopt themselves - they act to the best of their knowledge and belief, without seeking or accepting any instructions, in taking the decisions which they consider most appropriate for attaining the objectives assigned to them by the Treaty on European Union and the national laws.