Federalisation of the European Union
There is ongoing discussion about the extent to which the European Union (EU) has already turned from a confederation (a union of sovereign states) into a federation (a single federal state with a central government, consisting of a number of partially self-governing federated states) over the course of decades, and to what degree it should continue to evolve in a federalist direction. As of April 2026, the EU has no formal plans to become a federation.
Source: Wikipedia — Federalisation of the European Union (CC BY-SA 4.0)