Correction for the length of World War I
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How long is 1,400 years?
It's about 300 times as long as World War I
The length of World War I is about 4.370 years.
(a.k.a. First World War, a.k.a. Great War, a.k.a. World War, a.k.a. War to End All Wars, a.k.a. WWI, a.k.a. WW1) (1914 - 1918)