Adolf Hitler (top row, furthest right) at school in Austria, circa 1900. Hitler grew up to become leader of the National Socialist German Workers (Nazi) party in 1921. After an unsuccessful coup attempt in Munich in 1923, for which he was briefly imprisoned, Hitler set about pursuing power by democratic means. His nationalistic and anti-Semitic message quickly gained support in a Germany humiliated by defeat in World War I and the harsh terms of the Treaty of Versailles and, from the late 1920s, suffering from economic collapse. Hitler came to power in 1933, and persuaded the Reichstag (parliament) to grant him dictatorial powers. He proceeded to crush opposition both within his own party and throughout German society, and set about re-arming Germany. Hitler's aggressive policy of territorial expansion to secure 'lebensraum' (living space) for the German people eventually plunged the world into the Second World War (1939-45).