ELI5: Explain Like I'm 5

Ionian League

So imagine you're a part of a group of friends who like to play together. You five friends - let's call you all Alpha, Beta, Gamma, Delta, and Epsilon - decide to make a special club where you all help each other out when you need it.

This club is called the Ionian League. You all live in the same area, which is called Ionia, and it makes sense to band together because you're all better off when you work together. Not only that, but you can protect each other from anyone who might want to cause trouble.

In this club, you all agree to follow certain rules and help each other out. It's like a team! And if anyone tries to mess with any one of you, you all have each other's backs and will jump in to help.

The Ionian League is just like that club you created with your friends - but it was created thousands of years ago by some cities in Greece who wanted to be better off working together rather than fighting with each other. They were all in the same area, and it made sense to band together to help each other out.