The real causes of World War I included politics, secret alliances, imperialism, and nationalistic pride. However, there was one single event, the assassination of Archduke Ferdinand of Austria, which started a chain of events leading to war.
Answer:
date: 8 August – 11 November 1918
Location Amiens, France to Mons, Belgium
Result Allied victory End of World War I Collapse of the Western Front and the German Empire