The First World War or “The Great War”, as it was commonly called before the Second World War, was triggered mainly by three reasons. These three reasons made war inevitable. There was a lot of tension between many countries, but there was much more than just allies and rivalries between European countries. There was an initial spark in what started the war, but World War I primarily started because of militarism, nationalism, and imperialism. Without the deep belief that the armies were going to win the war(s), the soldiers might have had a different vision. on things and be week. Being proud of one's army or army was very important. Some countries like Germany send all their children to military school. From a young age, countries taught their nation military methods and took pride and confidence in their army or army. As technology evolved, weapons also helped many countries. Militarism, the European arms race played an important role in World War I and why it started. People from all over Europe during this period w...