Okay kiddo, do you know what the European Union (EU) is? It's kind of like a big group of countries in Europe that work together and make rules together. Just like how you and your friends might make rules for playing a game together, these countries make rules for how they will work together and do things like trade goods and services.
Now, these rules that the EU countries come up with are called EU laws. They are like big, important rules that everyone in the EU has to follow. These laws cover lots of different things, like how products can be made and sold, how workers are treated, and how the environment is protected.
Even though each of the EU countries is its own separate place with its own government and laws, they all have to follow the EU laws too. It's like how you might have your own house rules for your family, but if you go to your friend's house, you have to follow their house rules too.
So EU law is really important because it helps to make sure that everyone in the EU is following the same rules and playing fair with each other. And if someone doesn't follow the rules, there are consequences, just like if you break the rules in a game and have to sit out for a bit.
Overall, EU law is something that helps the countries in Europe work together and play fair with each other, kind of like how you and your friends have rules to make sure everyone has fun and feels included.