Federal district

Okay kiddo, imagine the United States of America like a big house with many rooms. Each room represents a state, and there are 50 rooms in total. Now, there are some important things that need to happen in the hallways and the other spaces in the house that don't belong to any particular room. So, we create a special room called a "federal district," which everyone can use for these important things.

This room is located in Washington D.C. and it's where the President lives, where laws are made, and where the other important government activities take place. It's not a state, so nobody lives there permanently like they do in the other rooms, but it's very important because it represents the entire country.

It's kind of like when your family has a guest room where your grandparents stay when they visit, even though they don't live with you all the time. The federal district is a special room that belongs to everyone and helps keep the whole house running smoothly.