The area in France where the most famous fairs of the High Middle Ages took place?

In the early Middle Ages, the main fairs were located in France. The most important markets were located in the northeastern part of the state. The most famous was the fair in the city of Champagne. Market days were held there every year, during which people could buy anything on the territory of the fair. Merchants from all over the world flocked there and put their goods on display. The trading season lasted for almost a year. At the fair, merchants replaced each other and brought new goods from different parts of the world.