During this period, between the 1815 Congress of Vienna after the defeat of Napoleonic France and the end of the Franco-Prussian War in 1871, Britain reaped the benefits of being the world's sole modern, industrial power. As the "workshop of the world", Britain could produce finished goods so efficiently that they could usually undersell comparable, locally manufactured goods in foreign markets, supplying a large share of the manufactured goods consumed by such nations as the German states, France, Belgium, and the United States.