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.
German Reich
The German word "Reich" translates to the English word "empire" (it also translates to such words as "realm" or "domain"). However, this translation was not used throughout the full existence of the German Reich. Historically, only Germany from 1871 to 1918 — when Germany was under the rule of an emperor ("Kaiser") — is known in English as the "German Empire" ("Deutsches Kaiserreich" in German historiography), while the term "German Reich" describes Germany from 1871 to 1945. As the literal translation "German Empire" denotes a monarchy, the term is used only in reference to Germany before the fall of the monarchy at the end of World War I in 1918.