3 5 9 10 11 12 13 14 15 18 19 12.3 95% 91% 82% 80% 78% 75% 73% 71% 69% 62% 60% 75%
1st World War in history Great War or War to End all War Not called WWI until after WWII Total war Involved 60 nations and 6 continents.
Great War or War to End all War Not called WWI until after WWII Total war Involved 60 nations and 6 continents.
