Though most think of California only when they consider American wine, upwards of 95% produced is along the Pacific corridor of states, including California (85%), Oregon, and Washington. Wine has been made in The States for around 400 years, but it is only in the last 40 that American wine really began to earn respect on a global scale, thanks to big scoring wines of Napa and Sonoma Valleys. The US is now the world's 4th biggest wine producing nation (behind France, Italy and Spain). An attempt to carve out regionality and terroir has led to the development of more than 200 appellations, known as American Viticultural Areas (AVAs). Modern winemaking today has seen wine production in every US state.