Answer:
The great war
Step-by-step explanation:
When the war first happened it was called the great war since (I am pretty sure) it was the first of it's kind but it was changed to World War 1 (WW1) when WW2 happened.
Hope this helps :)
The Great War
Other names for World War 1 include 'The War to End All Wars', The War of the Nations, WW1 and 'The Great War'.
3.5m questions
4.5m answers