History of Germany during World War I
In November 1918, with internal revolution, a stalemated war, Bulgaria and the Ottoman Empire suing for peace, Austria-Hungary falling apart from multiple ethnic tensions, and pressure from the German high command, the Kaiser and all German ruling princes abdicated. On 9 November 1918, the Social Democrat Philipp Scheidemann proclaimed a Republic, in cooperation with the business and middle classes, not the revolting workers. The new government led by the German Social Democrats called for and received an armistice on 11 November 1918; in practice it was a surrender, and the Allies kept up the food blockade to guarantee an upper hand. The war was over; the history books closed on the German Empire. It was succeeded by the democratic, yet flawed, Weimar Republic.
Kleinstaaterei
Only after Prussian Chancellor Otto von Bismarck gradually built a unified German state under the Prussian royal house of Hohenzollern did "Kleinstaaterei" largely end in 1871 with the founding of the German Empire. (The only surviving petty states—Luxembourg and Liechtenstein—lie at the periphery of the German-speaking world.) The founding of the German Empire created a largely German nation-state. While the German Empire excluded the partly German but multinational Habsburg domains of Austria–Hungary, it included a substantial Polish minority in parts of eastern Prussia and other minorities along its northern and western borders. The unification of the German Empire put Germany on the map as a major European power, albeit too late to become a major colonial presence. Internally in the nation some of these fragmented boundaries and small political units continued to exist until the modern States of Germany were established in the Federal Republic after World War II.