Hi there! So have you ever heard of a group of people who work together to make things better for everyone? That's kind of what the African Union is like. It's a bunch of countries (kind of like states, but for whole countries) in Africa that have decided to work together to make their continent better.
Now, some people think that it would be even better if MORE countries were part of this group, because then they could all help each other even more. So, they are talking about something called "enlargement," which just means adding more countries to the African Union.
But adding more countries to a group is not always easy. It's like when you have a really great game of tag going with just a few friends, but then someone wants to invite their little brother and sister, and you're not sure if they'll be able to play as well or if it will change the dynamic of the game. It's the same thing with adding new countries to the African Union - they want to make sure that these new countries will be able to work well with the countries that are already in the group, and that everyone will still be able to work together to make things better for everyone.
That's why there are a lot of conversations happening now about which countries might be good to add to the African Union, and how they can make sure that everyone is on the same page and working toward the same goals. It's not always easy, but if they can do it, it could make Africa even stronger!