An elaborate bureaucracy was created to regulate imports of raw materials and finished goods with the intention of eliminating foreign competition in the German marketplace and improving the nation's balance of payments. The Nazis encouraged the development of synthetic replacements for materials such as oil and textiles.[255] As the market was experiencing a glut and prices for petroleum were low, in 1933 the Nazi government made a profit-sharing agreement with IG Farben, guaranteeing them a 5 percent return on capital invested in their synthetic oil plant at Leuna. Any profits in excess of that amount would be turned over to the Reich. By 1936, Farben regretted making the deal, as excess profits were by then being generated.[256] In another attempt to secure an adequate wartime supply of petroleum, Germany intimidated Romania into signing a trade agreement in March 1939.[257]

More than 40 sub-camps, exploiting the prisoners as slave laborers, were also founded, mainly as various sorts of German industrial plants and farms, between 1942 and 1944. The largest of them was called Buna (Monowitz, with ten thousand prisoners) and was opened by the camp administration in 1942 on the grounds of the Buna-Werke synthetic rubber and fuel plant, six kilometers from the Auschwitz camp. The factory was built during the war by the German IG Farbenindustrie cartel, and the SS supplied prisoner labor. On November 1943, the Buna sub-camp became the seat of the commandant of the third part of the camp, Auschwitz III, to which some other Auschwitz sub-camps were subordinated.

The commander of Auschwitz-Birkenau, Rudolf Höss, stated in his autobiography that in 1941 (no exact date is given) he was summoned to Berlin, where Himmler informed him that Hitler had issued an order to solve the “Jewish Question” for good, and that the order was to be implemented by the SS. “The existing extermination places in the east are unsuited to a large scale, long-term action. I have designated Auschwitz for this purpose,” Himmler said.
Because the diary ends with the discovery of the hiding place and the deportation of its occupants to Auschwitz and from there to Bergen-Belsen, there are no harsh descriptions of the sort written by other young Jewish men and women, especially from Eastern Europe: there are no ghettos or camps, no starvation or loss of family members in aktions. The Germans are mentioned in the diary with hatred, called “Those vile people … the cruelest monsters ever to stalk the earth,” as Anne wrote on November 19, 1942. The attic’s occupants learned about their deeds, including the camps and gas chambers, from the BBC radio broadcasts, but they do not occupy a significant place in the diary, which centers mainly on the world of the attic’s inhabitants and their daily lives and Anne’s young, rich inner world. Readers are not asked to cope with the atrocity itself, and so the reading is less distressing. They do and do not read about the Holocaust at one and the same time.

A young Jewish girl named Anne Frank (1929-1945), her parents and older sister moved to the Netherlands from Germany after Adolf Hilter and the Nazis came to power there in 1933 and made life increasingly difficult for Jews. In 1942, Frank and her family went into hiding in a secret apartment behind her father’s business in German-occupied Amsterdam. The Franks were discovered in 1944 and sent to concentration camps; only Anne’s father survived. Anne Frank’s diary of her family’s time in hiding, first published in 1947, has been translated into almost 70 languages and is one of the most widely read accounts of the Holocaust.
The Nazis were hostile to the idea of social welfare in principle, upholding instead the social Darwinist concept that the weak and feeble should perish.[237] They condemned the welfare system of the Weimar Republic as well as private charity, accusing them of supporting people regarded as racially inferior and weak, who should have been weeded out in the process of natural selection.[238] Nevertheless, faced with the mass unemployment and poverty of the Great Depression, the Nazis found it necessary to set up charitable institutions to help racially-pure Germans in order to maintain popular support, while arguing that this represented "racial self-help" and not indiscriminate charity or universal social welfare.[239] Thus, Nazi programs such as the Winter Relief of the German People and the broader National Socialist People's Welfare (NSV) were organized as quasi-private institutions, officially relying on private donations from Germans to help others of their race - although in practice those who refused to donate could face severe consequences.[240] Unlike the social welfare institutions of the Weimar Republic and the Christian charities, the NSV distributed assistance on explicitly racial grounds. It provided support only to those who were "racially sound, capable of and willing to work, politically reliable, and willing and able to reproduce." Non-Aryans were excluded, as well as the "work-shy", "asocials" and the "hereditarily ill."[241] Successful efforts were made to get middle-class women involved in social work assisting large families,[174] and the Winter Relief campaigns acted as a ritual to generate public sympathy.[242]
Heinrich Himmler's Schutzstaffel (SS) took full control of the police and the concentration camps throughout Germany in 1934–35.[5] Himmler expanded the role of the camps to hold so-called "racially undesirable elements", such as Jews, Gypsies/Romanis/Sintis, Serbs, Poles, disabled people, and criminals.[6][7][8] The number of people in the camps, which had fallen to 7,500, grew again to 21,000 by the start of World War II[9] and peaked at 715,000 in January 1945.[10]