Answer:Over the next four years, the Great War (as World War I was then called) would grow to involve Italy, Japan, the Middle East and the United States, among other countries. More than 20 million soldiers died and 21 million more were wounded, while millions of other people fell victim to the influenza epidemic that the war helped to spread.
The war left in its wake three ruined imperial dynasties (Germany, Austria-Hungary and Turkey) and unleashed the revolutionary forces of Bolshevism in another (Russia). In the end, the uneasy peace brokered at Versailles in 1919 kept tensions in check for less than two decades before giving way to another devastating world war
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