after the war started, of course, the answer actually depends on which country you are talking about.
It started by the assassination of Arch Duke Ferdinand in Sarajevo in 1914
Germany had was the one country that was involved in World War l and World War ll
World War 1 started in 1914 and World War 2 in 1939
germany to england
It started in Poland on September 1, 1939 by the Nazi Germans when they invaded the country with military force.
They were on the losing side of the world war 1
it begin in 9158 when World War 1 started!