The Bolshevik Revolution was the event that led to Russia's early exit from World War 1. It was a costly war for Russia.
The assassination of Archduke Ferdinand was a major event that led to WW1
The assassination of Archduke Ferdinand was the one event that pushed Europe over the edge and brought about World War I.
pearl harbour
German invasion of Poland
pearl harbour
World War 1
World War I
World War I
World War I
The signing of the Armistice on November 11, 1918, ended World War I.
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