(A) ** WWI
(B) WWII
(C) the French Revolution
(D) the American Revolution
EXPLANATIONS BELOW
Concept note-1: -On June 28, 1919, the Treaty of Versailles was signed at the Palace of Versailles outside Paris, France. The treaty was one of several that officially ended five years of conflict known as the Great War-World War I.
Concept note-2: -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-3: -The Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allied Powers.
Concept note-4: -The first, and most significant, was the Treaty of Versailles, signed on June 28, 1919.
Concept note-5: -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.