The European Union (EU) is a political and economic union of 27 European countries that work together to promote peace, stability, and prosperity. Established in the aftermath of World War II, the EU aims to foster cooperation among its member states, allowing them to share resources, trade freely, and create common policies on various issues like the environment and security. One of the key features of the EU is the Euro, a common currency used by 19 of the member countries, which simplifies trade and travel. The EU also supports various programs to enhance education, culture, and research, making it easier for citizens to connect and collaborate across borders.