[Sidenote: Edward III claims the French crown.] At first Edward III, who was a mere boy in 1328, appeared to recognize the propriety of this settlement and did qualified homage to Philip VI for Guienne. But when it became apparent later that Philip was not only encroaching upon Edward's prerogatives in Guienne but had sent French troops to aid the Scotch, the English king bethought him of his neglected claim to the French crown. [Sidenote: The Flemish towns.] The advantage of publicly declaring himself the rightful king of France was increased by the attitude of the flourishing towns of Flanders. Philip VI had assisted the count of Flanders in a bitter struggle to prevent the towns from establishing their independence. Consequently the Flemish burghers now announced their willingness to desert Philip and acknowledge and aid Edward as their king. [Sidenote: Commercial relations between the Flemish towns and England.] [Sidenote: English wool.] Flanders at this period was the most important trading and manufacturing country in western Europe. Ghent was a great manufacturing town, like Manchester to-day, and Bruges a busy port, like modern Antwerp or Liverpool. All this prosperity was largely dependent upon England, for it was from there that the Flemish manufacturers procured the fine, long wool which they wove on their looms into cloth and spun into yarn. In 1336 the count of Flanders, perhaps at Philip's suggestion, ordered the imprisonment of all the Englishmen in Flanders. Edward promptly retaliated by prohibiting the export of wool from England and the importation of cloth. At the same time he protected and encouraged the Flemish artisans who had emigrated across the Channel and were carrying on their industry in the county of Norfolk. [Illustration: Royal Arms of Edward III] It is clear, then, that the Flemish burghers had good reason for wishing Edward to become their king, so that their relations with England might not be broken off. They did their part in inducing him to undertake the conquest of France, and (in 1340) we find him adding the _fleur de lis_ of France to the lions of the English royal arms. [Sidenote: Edward III invades France, 1346.] [Sidenote: The English victory at the battle of Crécy, 1346.]