The European Union (EU) is a political and economic partnership among 27 European countries, aimed at promoting peace, prosperity, and freedom for approximately 498 million citizens. It has established various institutions such as the European Parliament, the Council of the EU, and the European Commission to govern and legislate, achieving results like the Euro, safer food standards, and improved living conditions. The EU is also expanding its international relations and navigating public opinion in member states to address concerns about its governance and impact.