Roughly speaking, the following wars have been fought all over the world, or over most of the world up until the 1920s:
- The war of Spanish succession
- The Seven Years' War
- The Napoleonic Wars
- The Great War
WI it becomes mainstream to start referring to them as world wars up until world war IV? This will of course require a different mentality regarding history with an unclear POD, but would it actually change anything, even if after World War V (II)?