Nazi Germany is one of the best known acts of ultra-nationalism and genocide, known throughout the world and taught in many places as one of the most horrid acts in history. Nazi Germany was one of the main contributing factors for World War II--ultra-nationalism being the ultimate cause. The Holocaust is the genocide of many people who were different from the Germans. Amounting up to about 11 million deaths, 6 million of those being Jews and millions of other people, that had taken place in Europe which was led by one leader, Adolf Hitler.