Answer:
6 years
Explanation:
World War II lasted for six years, from 1939 to 1945.
The Great War began in August 1914. It would span more than four years and kill almost nine million soldiers. During the same time period, war and other violent conflicts were responsible for the deaths of an estimated twenty million civilians. Hence, the correct answer is 4.
The assassination of Austrian Archduke Franz Ferdinand on June 28, 1914, was the primary impetus for the outbreak of World War I. (World War I). Following the assassination, the following sequence of events occurred: Austria declares war on Serbia on July 28. After four years of fighting and the deaths of over 8.5 million men as a consequence of battle wounds or illness, the Allies won World War I. More information about the Treaty of Versailles may be found here.
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