Okay kiddo, let me tell you all about gergovia!
Gergovia is a really old city in France where people used to live a long long time ago. They had lots of cows and the cows made something called milk. The milk could be used to make something called cheese, which was really yummy to eat.
Now, back then, there wasn't a lot of technology so people had to do everything by hand. This included delivering the milk and cheese to other cities. But sometimes, the cows from one farm would need to be sent to another farm to help them make cheese. This was called a trade.
But, the people in Gergovia were really bad at trading cows. They would often trade too many cows or not enough cows and it caused a lot of problems. People would get upset and the cheese supply would go down.
So, the people of Gergovia decided to create some rules to make sure that they were better at trading cows. They made sure to count how many cows were being traded and everyone had to agree on the amount. This helped to make sure that all the farms got the right amount of cows and the cheese supply stayed constant.
And that's the story of gergovia! It's a really old city in France where people traded cows to make yummy cheese, but had to create rules to make sure they did it right.