South West France (wine region) the grapes to be harvested earlier and the wines to be of a stronger alcohol level. Many Bordeaux wine merchants saw the wines of the "High Country" as a threat to their economic interest and during the 13th & 14th century a set of codes, known as the "police des vins", were established which regulated the use of the port of Bordeaux for wine trading. The "police des vins" stated that no wine could be traded out of Bordeaux until the majority of Bordelais wine had already been sold. This had a devastating effect on the wine industry of the
Bordeaux wine vineyards were ruined by phylloxera infestations. The region's wine industry was rescued by grafting native vines on to pest-resistant American rootstock. The major reason for the success of winemaking in the Bordeaux region is an excellent environment for growing vines. The geological foundation of the region is limestone, leading to a soil structure that is heavy in calcium. The Gironde estuary dominates the regions along with its tributaries, the Garonne and the Dordogne rivers, and together irrigate the land and provide an Atlantic Climate, also known as an oceanic climate, for the region. Bordeaux lies at the center of the