With increasing economic integration, the complexity of regulation is also increasing. These are a number of rules, enforcement and arbitration mechanisms to ensure that importers and exporters comply with the rules. Complexity has a cost that can compromise the competitiveness of territories in the context of economic integration, as it reduces the flexibility of national policies. The decentralization of economic integration could occur if the complexity and restrictions associated with it, including the loss of sovereignty, are no longer considered acceptable by its members. The Council was made up of a national minister from each member state. However, the Council met in different forms depending on the topics covered. For example, if agriculture were discussed, the Council would be made up of each national minister of agriculture. They represented their governments and were accountable to their national political systems. The votes took place either by majority (with distribution by population) or unanimously. In these different forms, they share a certain legislative and budgetary power of Parliament. [25] Since the 1960s, the Council has also met informally at the level of national heads of state and government; These European summits followed the same system and the same presidential secretariat as the Council, but were not a formal formation.

The resulting Communities were the European Economic Community (EEC) and the European Atomic Energy Community (Euratom or, sometimes, CEEA). These were significantly less supranational than previous communities, [citation necessary] following protests by some countries that violated their sovereignty (but there were still concerns about the behaviour of the Hallstein Commission). Germany became a founding member of the EEC and Konrad Adenauer became the leader as soon as possible. The first formal meeting of the Hallstein Commission took place on 16 January 1958 at the Château de Val-Duchesse. The EEC (the direct forerunner of the modern Community) should create a customs union, while Euratom would promote cooperation in the field of nuclear energy. The EEC quickly became the most important and expanded its activities. One of the first important achievements of the ERC was the setting of a common level of agricultural commodity prices (1962). In 1968, internal tariffs (tariffs on trade between Member States) for certain products were abolished.

… a common customs system) and common markets (which allow, in addition to common tariffs, the free movement of resources such as capital and labour between Member States). A free trade area with common tariffs is a customs union. He called for the abolition of a common external tariff. A common market is an extension of the concept of a customs union, with the additional characteristic that it provides for the free movement of labour and capital between members; An example was the Benelux market until it was transformed into an economic union in 1959…. Tariff for non-members and a common market complements these rules by allowing the free movement of capital and labour. An economic and monetary union, which requires a high degree of political consensus between the Member States, aims at full economic integration through a common economic policy, a common currency and… In order to create a federal Europe, two other communities have been proposed: a European Defence Community and a European Political Community.