From April 20, 1889 to April 30, 1945, Adolf Hitler was the leader of the national Nazi Party (NSDAP), the German prime minister from 1933 to 1945 and the f? Hrer ("leader") from 1934 to 1945. As a dictator, he invaded Poland in September 1939, launched the Second World War in Europe, and was the center of the Holocaust.

Hitler was born in Austria, then part of Hungary, Austria, and grew up near Linz. He moved to Germany in 1913 and was decorated while serving in the German army during World War I. He joined the German workers' Party (DAP), the predecessor of NSDAP in 1919, and became the leader of NSDAP in 1921. In 1923, he launched a coup in Munich to seize power. The failed coup led to Hitler's imprisonment, during which he directed the first volume of his autobiography and political manifesto, my struggle. After Hitler's release in 1924, he gained popular support by attacking the Treaty of Versailles and promoting pan German, anti Semitic and anti communism through charming speeches and Nazi propaganda. Hitler often denounced international capitalism and communism as part of the Jewish conspiracy.

By 1933, the Nazi party was the largest Democrat Party in the German parliament, leading Hitler to be appointed prime minister on January 30, 1933. After his coalition won a new election, the Capitol passed the authorization act, which began the transformation of the German Parliament. Weimar Republic entered Nazi Germany, which was a one party dictatorship based on the centralized and autocratic ideology of national socialism. Hitler's goal was to expel Jews from Germany and establish a new order to fight against the injustice of the international order which he believed was dominated by Britain and France after the first World War. His first six years in power led to a rapid economic recovery from the great depression, effectively giving up the restrictions imposed on Germany after the first World War, and annexing the territory of millions of Germans, which gave him great support.

Hitler sought "Lebensraum" for the Germans in Eastern Europe. His active foreign policy is believed to be the main reason for the outbreak of the Second World War in Europe. He directed large-scale rearmament and invaded Poland on September 1, 1939, leading to the declaration of war against Germany by Britain and France. In June 1941, Hitler ordered the invasion of the Soviet Union. By the end of 1941, the German army and the European Axis had occupied most of Europe and North Africa. In December 1941, Hitler formally declared war on the United States, bringing them directly into the conflict. The failure to defeat the Soviet Union and the United States' participation in the war forced Germany to take defensive measures and suffered a series of escalating failures. In the last days of the war, at the battle of Berlin in 1945, Hitler married his longtime lover Eva Braun. On April 30, 1945, less than two days later, the two committed suicide to avoid being captured by the Red Army, and their bodies were burned.

Under Hitler's leadership and ethnically motivated ideology, the Nazi regime was responsible for the genocide of at least 5.5 million Jews and millions of other victims. He and his followers believed that he was his followers. They were untermenschen (subhuman) and were not welcome in society. Hitler and the Nazi regime were also responsible for the killing of an estimated 19.3 million civilians and prisoners of war. In addition, 29 million soldiers and civilians were killed as a result of military operations in the European theatre of World War II. The number of civilians killed during the second world war is unprecedented in war; these casualties are the deadliest conflicts in human history.