Located outside the Kingdom of France, the Princes Souverains de Dombes were careful to foster the development of the local economy through a number of advantages over neighboring territories. For example, the working of precious metals was much less taxed than in France, and it was possible to own a private arg. This machine was used to stretch gold and silver rods before turning them into thread for embroidery and trimmings. In France, there was a state monopoly on the argues royales, located only in Paris and Lyon, from which taxes had to be paid in order to stretch the precious metal. Gold and silver drawers therefore established themselves and prospered in Trévoux until the 19th century. Indeed, even after the Dombes region became part of France in 1762, the industry continued to thrive, as the king established a royal argue in Trévoux to preserve this activity.
Of gold and silver thread