This astounding economic recovery must not, it is true, be attributed only to the beneficial action of the dukes' administration, but it seems evident that a long period of peace, guaranteeing order, security and free communication with other countries, combined with wise administrative and financial measures, contributed greatly to hasten it. Measures were taken to lighten the restrictions and monopolies of towns and corporations and to regulate and control the minting of money. As early as 1483, Philip the Good was able to boast that his money was better than that of any of his neighbours. The right of coining money was no longer farmed out, but entrusted "to notables well known for their wealth, who could provide the country with gold and silver money and exchange any money which might be brought to them by the merchants." In 1469 Edward IV of England and Charles the Bold agreed to call a conference in Bruges to determine a common currency for both countries and to suppress the exchange. [_ANTWERP AND BRUGES_] These financial regulations are intimately connected with the transformation which trade underwent at the time, and which was one of the main causes of the transfer of the economic centre of the country from Bruges to Antwerp. The reason generally given for this change is a geographical one. It is pointed out that while, at the beginning of the fifteenth century, the widening of the western branch of the Scheldt through inundations in Zeeland afforded a direct road from Antwerp to the high-seas (formerly ships had to go round the island of Walcheren), all the efforts made to prevent the silting up of the Zwyn from 1470 to 1490 were fruitless. In 1506, it was possible for carts to drive safely at low tide across the end of the harbour. The progress of navigation, increasing the tonnage of ships, and the Spanish and Portuguese discoveries acted also in favour of the deeper and safer harbour, but there are other reasons which might have ruined Bruges in favour of Antwerp, even if the geographical advantages of both ports had remained equal.