Adolf Hitler (April 20, 1889 to April 30, 1945) was chancellor the of Germany from 1933 to 1945, serving as dictator and leader of the Nazi Party. For most of his time in power, Hitler’s ways provoked World War II to start which led to the Holocaust.To Adolf Hitler, Jews were an inferior race, a threat to German racial purity. After many years of Nazi rule in Germany, which Jews were constantly being persecuted, Hitler’s “final solution” (now known as the Holocaust), came to affect, with mass killing centers constructed in the concentration camps.The Holocaust was a mass murder of six million Jews and millions of other people leading up to, and during, World War II. The murdering took place in Europe between 1933 and 1945. It was organised by the German Nazi party. The largest group of victims were the Jewish people. Nearly 7 out of every 10 Jews living in Europe were killed. Most of the victims were killed due to being in a certain racial or religious group which the Nazis wanted to wipe out. This kind of killing is called genocide. The Nazis also murdered around 7 million Soviet civilians, around 3 million Soviet prisoners of war (including about 50,000 Jewish soldiers), around 1.8 million non-Jewish Polish civilians  (including between 50,000 and 100,000 members of the Polish elites) ,around 312,000 Serb civilians, around 196,000–220,000 Gypsies,  around 1,900 Jehovah’s Witnesses: The Nazis were constantly looking for more efficient ways of extermination. At the Auschwitz camp in Poland, they conducted experiments with Zyklon B (previously used for fumigation) by gassing 600 Soviet prisoners of war and 250 ill prisoners in September 1941. Zyklon B pellets, converted to lethal gas when exposed to air. They proved the quickest gassing method and were chosen as the means of mass murder at Auschwitz.  At the height of the deportations, up to 6,000 Jews were gassed each day at Auschwitz.Between 1933 and 1945, The Nazis and their allies made more than 40,000 camps and other incarceration sites. They used these sites for a number of  different purposes, including forced labor, detention of people thought to be enemies of the state, and mass murder.In May 8th 1945, the Allies defeated Nazi Germany and the Holocaust ended. The Holocaust wiped out many of the most educated and productive people in western Russia,” said co-author James A. Robinson, the David Florence Professor of Government at Harvard. “It was a major shock to the social structure of the invaded regions, dramatically reducing the size of the Russian middle class. The killing of Jews in the Holocaust appears to have hurt many Russian cities and regions by permanently reducing the size of the middle class. The analysis shows that Jews, despite being a small minority, made up a disproportionate share of the Russian middle class. Before World War II, 67 percent of Russian Jews held white-collar jobs, compared with only about 15 percent of non-Jews. In some of the invaded areas, 70 percent of physicians and many workers in high-skill jobs in trade and education were Jews.