New World wines are those wines produced in all global regions other than the traditional wine producing regions of Europe (and technically the Near East and North Africa). California is a natural source for wines offered in the US, as are the other growing West Coast AVAs in Oregon and Washington. Also major South American producer countries such as Argentina and Chile produce New World wines, as do South Africa, New Zealand and Australia.
New World wines tend to be produced with highly sophisticated and scientific winemaking techniques, to yield wine of a quality deemed desirable to US consumers, and of a consistent quality across vintages. New World wine sensory profiles and flavors are what most US wine consumers expect to experience for a given wine varietal or type (e.g. Cabernet Sauvignon that is heavy bodied, oaked and well balanced, and often a bit “jammy”).