The difficulty which gave rise to this conference and to the signal mark of distinction bestowed upon the citizens of London, proved to be of a commercial character, and, as such, one upon which the opinions of the leading merchants of London would be of especial value. Ever since the year 1270, the commercial relationship between England and Flanders had been strained. The Countess of Flanders had thought fit to lay hands upon the wool and other merchandise belonging to English merchants found within her dominions, and to appropriate the same to her own use. Edward’s predecessor on the throne had thereupon issued a writ to the mayor and sheriffs of London, forbidding in future the export of wool to any parts beyond sea whatsoever,(293) but this measure not having the desired effect, he shortly afterwards had recourse to reprisals. On the 28th June, 1270, a writ had been issued to the same parties ordering them to seize the goods of all Flemings, Hainaulters, and other subjects of the Countess, for the purpose of satisfying the claims of English merchants; and all subjects of the Countess, except those workmen who had received express permission to come to England for the purpose of making cloth, and those who had taken to themselves English wives, and had obtained a domicile in this country, were to quit the realm by a certain date.(294) Those Flemings who neglected this injunction were to be seized and kept in custody until further orders, and the same measures were to be taken with those who harboured them. In the meantime, an inquisition was ordered to be made as to the amount and value of the goods seized by the Countess, and the English merchants were to lodge their respective claims for compensation. (M186) The interruption of trade between England—at that time the chief wool-exporting country in the world—and Flanders where the cloth-working industry especially flourished, caused much tribulation; and the King of France, the Duke of Brabant, and other foreign potentates, whose subjects began to feel the effect of this commercial disturbance, addressed letters to the King of England, requesting that their merchants might enter his realm and stay, and traffic there as formerly. They had never offended the King or his people; the Countess of Flanders was the sole offender, and she alone ought to be punished. The matter having received due consideration, the embargo on the export of wool was taken off with respect to all countries, except Flanders, with the proviso that no wool should be exported out of the kingdom without special license from the king.(295)