German Empire
The high command under Paul von Hindenburg and Erich Ludendorff increasingly controlled the country, but in October after the failed offensive in spring 1918, the German armies were in retreat, allies Austria-Hungary and the Ottoman Empire had collapsed, and Bulgaria had surrendered. The Empire collapsed in the November 1918 Revolution with the abdications of its monarchs. This left a postwar federal republic and a devastated and unsatisfied populace, which later led to the rise of Adolf Hitler and Nazism.
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.