(A) ** Allied powers
(B) Central Powers
EXPLANATIONS BELOW
Concept note-1: -The Allies won World War I after four years of combat and the deaths of some 8.5 million soldiers as a result of battle wounds or disease. Read more about the Treaty of Versailles.
Concept note-2: -The first World War was won by the Allies consisting of the United Kingdom, France, United States, Japan, Italy. They defeated the Central Powers consisting of Imperial Germany, Austro-Hungary Empire and the Ottoman Empire.
Concept note-3: -At the end of the war, Germany’s defeat and widespread popular discontent triggered the German Revolution of 1918–1919 which overthrew the monarchy and established the Weimar Republic.
Concept note-4: -Allied victory in France and Belgium ensured that Germany could not win the war (despite defeating Russia on the eastern front and Serbia in the Balkans) and that the British, French and Americans would go on to shape the postwar settlement at Versailles.
Concept note-5: -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.