Ok kiddo, so imagine if you and your friend live in two different countries, but you really like playing together and hanging out. Now imagine if there was a special area where both of your countries meet and you can both play and hang out there without worrying about any rules or differences between your countries. That special area is called a eurodistrict!
A eurodistrict is when two or more cities from different countries come together and create a special region where they work together and make decisions together, like a big team! Everyone who lives in that eurodistrict can benefit from things like more jobs, better transportation, and better cooperation between different countries.
So it's just like in your school when you work together with your classmates to solve a problem, except that instead of just classmates, there are different countries working together to make things better for everyone who lives in the eurodistrict. Pretty cool, huh?