History of Bordeaux wine became the base for Richard's French operations. As the popularity of Bordeaux wine increased, the vineyards expanded to accommodate the demands from abroad. Henry and Aliénor youngest son, John was in favor of promoting the wine industry, and to increase it further, abolished the "Grande Coutume" export tax to England from the Aquitaine region. In the 13th and 14th century, a code of business practices called the "police des vins" emerged to give Bordeaux wine a distinct trade advantage over its neighboring regions. The citizenry of Bordeaux worked diligently to promote and foster their relationship with the English market. In
Wine from the United Kingdom Normans, with over 40 vineyards in England mentioned in the Domesday Book, although much of what was being produced was for making communion wine for the Eucharist. From the Middle Ages, the English market was the main customer of clarets from Bordeaux, France, helped by the Plantagenet kingdom, which included England and large provinces in France. In the 18th century, the Methuen Treaty of 1703 imposed high duties on French wine. This led to the English becoming a main consumer of sweet fortified wines like sherry, port wine, and Madeira wine from Spain and Portugal. Fortified wine became popular because