If WWI never happened, then that means no WWII. Meaning no Holocaust. This means that over 90 million people DON'T die. Secondly, No USSR or Axis powers. WWI = Russian starvation. Russian starvation = uprising. WWI was the reason for WWII. Without WWI, no fascism and no communism.Third of all, no WWI means that the Ottoman Empire and Austro Hungarian Empire might survive until 1925 due to ethnic chaos occurring in both empires.Fourth of all, no WWI means no WWII means no Cold War. Since the USSR isn't here, this means that nobody is really the superpower during the 20th century, because WWI allowed the USA to show its power and influence over the world.