After the Conquest, communication with Normandy naturally increased greatly. Rouen was particularly favoured, and was granted a monopoly of trade with Ireland and freedom of commerce in London. In the twelfth century silver was imported in exchange for meat, fish and wool, which were all sent to the manufacturing districts of the Low Countries. Corn was sometimes exported, but not without a licence. The House or Gild of the Merchants of Almaines otherwise called the House of the Teutonics, was formed about the year 1169, though the Germans, under the name of Easterlings, are known to have traded here, during the Saxon period. The gild flourished in London as the Merchants of the Steelyard till the time of Elizabeth, when their special privileges were abolished by royal decree. Hallam tells us that from the middle of the twelfth to the thirteenth century the traders of England became more and more prosperous. The towns on the southern coast exported tin and other metals in exchange for the wines of France. Those on the eastern coast sent corn to Norway, and the Cinque Ports bartered wool against the stuffs of Flanders. The export, of wool and the import of cloth were prohibited in 1261, and the prohibition was repeated in 1271. The cause of this prohibition may be illustrated by reference to a particular import--woad, which seems to show that a native woollen manufacture existed, although all the finer cloth came from Flanders. The restrictions originally imposed upon the woad merchants would not allow them a settlement in the city nor permit them to store their woad, which they had to sell as best they could on the wharf where it was landed. In 1237, however, the merchants of Amiens, Corby and Nesle were allowed, by special arrangement, greater freedom in the disposal of their woad and other wares. In the end the woad merchants settled in Cannon Street (Candelwykstrete), the very centre of the cloth trade in London, as Lydgate tells us in his _London Lyckpenny_:-- 'Then went I forth by London Stone, Throughout all Canwyke Street; Drapers mutch cloth me offered anone.'[287] London was the seat of trade in Eastern luxuries, which became known largely through the influence of the Crusades. Silks, fruits, spices and Greek wines were brought here by the Italian fleets which, after 1317, regularly visited England. In the thirteenth and fourteenth centuries the importance of our commerce is shown by the appearance of regulations for its promotion in the Statute Book. The Statute of Merchants is dated 1283-1285, and the _Carta Mercatoria_ 1303.