History of Portuguese wine country unfavorable for viticulture, making the country a ready market for imported wines; its proximity to France, made French wines a natural source. At times the supply was threatened by political and military conflicts between the English and French crowns. New sources had to be found such as the wines of Portugal. Documents exist detailing Portuguese wine shipments from the Minho region to England occurring as early as the 12th century. These wines, including those from the wet northern region of modern-day Vinho Verde, were often light and astringent with noticeable acidity. Despite the new source, the variety of French
Wine Country (California) Valley, and Russian River Valley in Sonoma County. Wine grapes are also grown at higher elevations, such as Atlas Peak and Mount Veeder AVAs. Cities and towns associated with the Wine Country include Santa Rosa, Healdsburg, Sonoma, Kenwood, Petaluma, Sebastopol, Guerneville, Windsor, Geyserville, and Cloverdale in Sonoma County; Napa, Yountville, Rutherford, St. Helena and Calistoga in Napa County; and Hopland and Ukiah in Mendocino County. Lake County is an increasingly important part of the area, surpassing Mendocino County in 2014 in price paid per ton of grapes in the North Coast premium market. Wine Country is generally regarded as the