In line with the functionalist approach to European integration taken by Schuman and Monnet, the broader European vision was to be achieved by embarking upon economic integration first. In 1957, when the European Economic Community was established, its objective was to establish the free circulation of goods, services, capital and labour.
This was achieved, after the ratification of the European Single Act in 1986, with the creation of the Single Market in 1993. The four markets for goods and services, capital and labour are exactly those that money serves.