World War 2 Introduction World War 2 was one of the many wars that occurred during the 20th century. this brutal war many countries, people, and history were changed. The factors encourged the Germans and Japanese forces allowed them to take over other countries and kill many of people. Now, years later, from a different point of view, the Germans and Japanese accomplished nothing but just killing innocent people. The greediness behind the Germans and Japanese in the 20th century would change everybodys lives forever. How Did This War Start The Germans had a powerful army in the 1930's. They had a very powerful leader named Adolf Hitler. He was a greedy man wh