Many people today believe that two things are necessary for a world war to occur.
many countries must get involved
must fight all over the world
This was generally true of both the modern world wars and the early wars in history that were world wars in their own right – including the Seven Years' War and the Napoleonic Wars – I would argue, mainly for the different two wars. I believe that two factors are necessary. A war involving a large number of nations simply from a real-world war:
A war must be waged in full military force by at least two superpowers, and besides significant involvement of less involved countries, there is no limit to how far the war itself can go. What modern times called war crimes - and even then, including the use of nuclear weapons, which are prohibited by international treaties, there is no guarantee that belligerents will honor such commitments in the event of a world war, but they should be used more. and happily use it to achieve my end goal