(A) Berlin, Germany
(B) ** Versailles, France
(C) Congress of Vienna
(D) the United States
EXPLANATIONS BELOW
Concept note-1: -Delegates signed the Treaty of Versailles in the former palace’s famous Hall of Mirrors, ending World War I. On June 28, 1919, the Treaty of Versailles was signed at the Palace of Versailles outside Paris, France.
Concept note-2: -In 1919, the Big Four met in Paris to negotiate the Treaty: Lloyd George of Britain, Vittorio Emanuele Orlando of Italy, Georges Clemenceau of France, and Woodrow Wilson of the U.S. The Paris Peace Conference was an international meeting convened in January 1919 at Versailles just outside Paris.
Concept note-3: -Treaty of Versailles, peace document signed at the end of World War I by the Allied and associated powers and by Germany in the Hall of Mirrors in the Palace of Versailles, France, on June 28, 1919; it took force on January 10, 1920.
Concept note-4: -As the most important treaty of World War I, it ended the state of war between Germany and most of the Allied Powers. It was signed in the Palace of Versailles, exactly five years after the assassination of Archduke Franz Ferdinand, which led to the war.