Okay kiddo, so the Budapest Treaty is a special agreement between different countries that helps them share and protect their inventions related to living organisms like plants and animals.
You know how you love playing with different kinds of animals and plants, right? Well, scientists also work with these living things to make new things, like medicines or foods. But they need to make sure that nobody else copies their work without permission.
That's why countries make the Budapest Treaty. It helps scientists and researchers share their inventions with each other, and protects them from being stolen or used without permission by other people or companies.
So, it's like a special agreement made by countries to help scientists protect their work with living things, and to make sure that they can share it with other scientists easily.