Following the fall of Napoleon Bonaparte, the Congress of Vienna convened in 1814 and founded the German Confederation (Deutscher Bund), a loose league of 39 sovereign states. Disagreement with restoration politics partly led to the rise of liberal movements, demanding unity and freedom. These, however, were followed by new measures of repression on the part of the Austrian statesman Metternich. The Zollverein, a tariff union, profoundly furthered economic unity in the German states. During this era many Germans had been stirred by the ideals of the French Revolution, and nationalism became a more significant force, especially among young intellectuals. For the first time, the colours of black, red and gold were chosen to represent the movement, which later became the national colours.[20]
In light of a series of revolutionary movements in Europe, which successfully established a republic in France, intellectuals and commoners started the Revolutions of 1848 in the German states. The monarchs initially yielded to the revolutionaries' liberal demands. King Frederick William IV of Prussia was offered the title of Emperor, but with a loss of power; he rejected the crown and the proposed constitution, leading to a temporary setback for the movement. Conflict between King William I of Prussia and the increasingly liberal parliament erupted over military reforms in 1862, and the king appointed Otto von Bismarck the new Prime Minister of Prussia. Bismarck successfully waged war on Denmark in 1864. Prussian victory in the Austro-Prussian War of 1866 enabled him to create the North German Federation (Norddeutscher Bund) and to exclude Austria, formerly the leading German state, from the affairs of the remaining German states.
