Hitler was born in 1889 in Austria near the German border. His father was an intelligent senior customs official and his mother was his father's third wife. They had five children but only Hitler and his younger sister survived to adulthood. Hitler became the leader of the Nazi party in 1921 and wrote his memoir Mein Kampf. During World War II, he organized concentration camps where Jews were destroyed, including Auschwitz, Chelmno, Belzec, Majdanek, Sobibor and Treblinka. Hitler committed suicide in 1945 in Berlin.