Mézières in the 9th century... The quays along the Meuse were bustling with activity. A lot of trading took place: Burgundy wines passed through the city. At this crossroads of the economic world in northern Europe, trading posts and processing workshops sprang up on all sides. The city became rich on 500 years of trade. Many people from Liège brought their know-how to Mézières. Henceforth, iron was to be hammered out along the Meuse. This wealth had to be protected. Mézières took steps to ensure that it was encircled and fortified…