(A) 1910
(B) 1917
(C) ** 1918
(D) 1911
EXPLANATIONS BELOW
Concept note-1: -Germany had formally surrendered on November 11, 1918, and all nations had agreed to stop fighting while the terms of peace were negotiated. On June 28, 1919, Germany and the Allied Nations (including Britain, France, Italy and Russia) signed the Treaty of Versailles, formally ending the war.
Concept note-2: -By the end of 1917, the Bolsheviks had seized power in Russia and immediately set about negotiating peace with Germany. In 1918, the infusion of American troops and resources into the western front finally tipped the scale in the Allies’ favor. Germany signed an armistice agreement with the Allies on November 11, 1918.
Concept note-3: -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.