Okay kiddo, so do you remember when we learned about drought before? It's when a place doesn't get enough rain for a really long time and all the plants and animals get really thirsty and hungry.
Now, a federation drought is when a big area of land, like a whole country or even more than one country, has a really bad drought all at the same time. This means that lots and lots of people and animals are affected, and it can be really hard to get enough food and water for everyone.
It's like if all the kids in your neighborhood were really thirsty and all the water fountains were broken, and you had to figure out how to share the water you have or find more somewhere else. It's a really tough situation that can last for months or even years. But people work hard to help each other and the animals in a federation drought, and eventually the rain comes back and everything gets better again.