ELI5: Explain Like I'm 5

Supranational union

A supranational union is when different countries decide to come together to work together on common goals and make decisions. It's like being part of a club - each country gets to have its own decisions and laws, but in the club the countries work together to help each other out. For example, all the countries in the European Union are part of a supranational union, and they agree to share resources, help each other out, and make joint decisions.