Between 1830 and 1860, Germany provided the world with some of the pioneers of marginalism. Johann Heinrich von Thünen and Hermann Heinrich Gossen are shining examples. Then German theory declined. The center of German-language theory shifted to Vienna, and from 1885 to 1930 the German academic establishment, dominated by the Historical School, was virtually cut off from the progress of mainstream economics. Things began to change around 1930; German economists started again to make original contributions. By the end of the war, they had provided Germany with a solid link to the mainstream. Except for Erich Schneider, nobody contributed as much to this development as Heinrich von Stackelberg.