Answer:
Extreme and narrow nationalism of Germany, Italy and Japan was one of the chief causes of the Second World War. The humiliating terms of the Treaty of Versailles made the German love for nationalism stronger. The problems faced by Germany made the people more conscious of the need for unity and strength.
Step-by-step explanation:
Another one of the main reasons that World War 2 happened was that Adolf Hitler put the Jewish people into concentration camps. During this valiant battle the United States Military had a lot of young healthy men join to fight in World War 2 because they wanted to make sure that the germans and japanese did conquer the world by fight them off.
The War to End All Wars. World War I saw a change in warfare, from the hand-to-hand style of older wars to the inclusion of weapons that used technology and removed the individual from close combat. The war had extremely high casualties over 15 million dead and 20 million injured. The face of warfare would never be the same again.