Quoted from Jugendstil and Racism: An Unexpected Alliance by Angelika Pagel
“…hostility grew strong as a result of Napoleons occupation of Germany. The hoped for unification of the many petty German states under the leadership of Prussia and with the help of the French Revolution had not been achieved. The Vienna Congress of 1814-15 failed to establish a sovereign German nation-state with unified national politics and France, though defeated, even managed (through Talleyrand’s diplomacy) to emerge from the talks with its hegemony in Europe re-affirmed. Germany’s struggle for national unity would continue throughout the 19th century while the other major European powers had long since achieved this status. Disappointed and envious, Germans turned inward and backward, to ideas of tribal nationalism, of common ancestry in a shared Germanic past. Gradually, this idea of an integral German nation and people (Deutsche Nation und Volkstum) degenerated into the myth of blood-and-soil; antisemitism emerged as a “logical” consequence of this tribalism and the Nazi battlecry “One People, one Empire, one Leader” (Ein Volk, ein Reich, ein Führer) epitomized the desire for national unity spanning the entire 19th century. Even after the Vienna Congress, the “glorious power of French nationhood” was experienced by the Germans in painful contrast to their own lack of national unity.”