(A) Weimar Republic
(B) Constitution
(C) ** The Armistice
(D) Treaty of Versailles
EXPLANATIONS BELOW
Concept note-1: -An armistice is a formal agreement of warring parties to stop fighting.
Concept note-2: -Armistice on the Western Front. On Nov. 11, 1918, after more than four years of horrific fighting and the loss of millions of lives, the guns on the Western Front fell silent. Although fighting continued elsewhere, the armistice between Germany and the Allies was the first step to ending World War I.
Concept note-3: -The terms of the armistice stripped Austria of all power to renew the war should she be so inclined. The army was to be wholly and promptly demobilized. Austrian brigades fighting with the Germans were to be withdrawn. All territories occupied by Austria since the beginning of the war were to be evacuated.