Abstract
As a result of Brexit, efforts to promote more federalist organization of the EU strengthen. Any institutional changes, however, must respect the legal cultures involved, otherwise there is a risk of EU cohesion being reduced.
Despite the convergence of legal orders in the EU, a common European legal culture has not yet been established. It is therefore appropriate to compare legal cultures in the EU and identify their characteristic elements.
The distinction between former legal circles or families is currently not supported by reality. Legal systems can no longer be represented by their "parent" legal system.
However, the ad hoc approach where the legal systems are always systematized according to the solutions they offer in the specific case cannot be considered to be correct. Legal regulation of an individual legal institute cannot provide a picture of the whole legal culture.
Legal culture is a reflection of general culture and includes sociological, historical and economic aspects, too. These must also be the subject of comparison.
If these aspects were not explored before implementing the institutional change of the EU, the room for decentralization tendencies will open.