So, you know how when you are in one grade at school, you eventually need to move up to the next grade? Well, when the leader (or president) of the United States is in charge for four years, they eventually need to move out so someone else can come in and be the new leader.
Now, it's important that this transition between presidents goes smoothly, just like when you move up to the next grade, you need to make sure you know what to do so you can start the new grade off right.
So, after the election where the new president is chosen, there is a period called the presidential transition. During this time, the current president and their team start to share information and advice with the new president and their team. This helps the new president learn about important issues that the country is facing and get ready to take over as the new leader.
They have some special rules and helpers during this time. For example, there is a group called the General Services Administration (GSA) that helps the new president's team set up their new office space and get things like computers and phones. This way, they are all ready to start working on their first official day.
Overall, the presidential transition is like passing the baton in a relay race. The current president hands off important information and responsibilities to the new president, so they can continue to work together to make the United States a great place to live.