When three refugee physicists confided to Einstein that the Nazis might be developing a new weapon—an atomic bomb—he decided to act. Despite his previous appeals for governments to dispense with the weapons of war, Einstein wrote to President Franklin Roosevelt in 1939 alerting him to "a new phenomenon that would...lead to the construction of bombs" and suggested that the United States accelerate its atomic weapons research program. Scholars debate the effect of this letter. Einstein signed it in 1939 and the Manhattan Project, the U.S. effort to build the bomb, began in 1941.
Various other German industrial enterprises, such as Krupp and Siemens-Schuckert, built factories with their own subcamps.[68] There were around 40[69] or 50[70] such camps, 28 of them near industrial plants, each camp holding hundreds or thousands of prisoners.[71] Designated as Aussenlager (external camp), Nebenlager (extension or subcamp), or Arbeitslager (labor camp),[69] camps were built at Blechhammer, Jawiszowice, Jaworzno, Lagisze, Mysłowice, Trzebinia, and centers as far afield as the Protectorate of Bohemia and Moravia in Czechoslovakia.[72][73][74] Industries with satellite camps included coal mines, foundries and other metal works, and chemical plants. Prisoners were also made to work in forestry and farming.[75] Budy, for example, was a farming subcamp where prisoners worked 12-hour days, often in the fields, but sometimes tending animals, cleaning ponds, digging ditches, and making compost. Human ashes from the crematorium were mixed with sod and manure to make the compost.[76] Incidents of sabotage to decrease production took place in several subcamps, including Charlottengrube, Gleiwitz II, and Rajsko.[77]

When the Italian invasion of Ethiopia led to only mild protests by the British and French governments, on 7 March 1936 Hitler used the Franco-Soviet Treaty of Mutual Assistance as a pretext to order the army to march 3,000 troops into the demilitarised zone in the Rhineland in violation of the Versailles Treaty.[60] As the territory was part of Germany, the British and French governments did not feel that attempting to enforce the treaty was worth the risk of war.[61] In the one-party election held on 29 March, the NSDAP received 98.9 percent support.[61] In 1936, Hitler signed an Anti-Comintern Pact with Japan and a non-aggression agreement with Mussolini, who was soon referring to a "Rome-Berlin Axis".[62]
During his youth in Austria, Hitler was politically influenced by Austrian Pan-Germanist proponent Georg Ritter von Schönerer, who advocated radical German nationalism, antisemitism, anti-Catholicism, anti-Slavic sentiment and anti-Habsburg views.[77] From von Schönerer and his followers, Hitler adopted for the Nazi movement the Heil greeting, the Führer title and the model of absolute party leadership.[77] Hitler was also impressed by the populist antisemitism and the anti-liberal bourgeois agitation of Karl Lueger, who as the mayor of Vienna during Hitler's time in the city used a rabble-rousing style of oratory that appealed to the wider masses.[78] Unlike von Schönerer, Lueger was not a German nationalist and instead was a pro-Catholic Habsburg supporter and only used German nationalist notions occasionally for his own agenda.[78] Although Hitler praised both Lueger and Schönerer, he criticized the former for not applying a racial doctrine against the Jews and Slavs.[79]
Schneidermann, when I spoke with him, added that, of course, “the situation today is totally different from the nineteen-thirties. In the thirties, there were the big papers and there were the small papers. Period. Today, newspapers are drowned in the social networks, drowned in Facebook and Twitter, which is to say drowned in an ocean of commentary. Commentators who are activists, moralists, et cetera.” As a result, today’s readers are inundated with emotion, and turn to legacy media for trustworthy information. Here, Schneidermann’s analysis dovetails with what the American public says it wants. “I think what remains for journalism today is the essence of the profession,” he said, “which is the verification of facts. Everywhere there is commentary. The only thing that’s left, really, is investigating facts.”
Memory is not something that is acquired once and stays on forever. The moment that the last eyewitnesses and survivors pass away, we have to work together to build on that which remains: the testimonies of those former prisoners and the authentic artifacts connected with Auschwitz. Each item can have its own enormous meaning and should find its place in the collection of the Auschwitz Memorial. Here, it will be preserved, studied, and displayed. Its place is here. 
The Nazi regime promoted a liberal code of conduct regarding sexual matters and was sympathetic to women who bore children out of wedlock.[382] Promiscuity increased as the war progressed, with unmarried soldiers often intimately involved with several women simultaneously. Soldier's wives were frequently involved in extramarital relationships. Sex was sometimes used as a commodity to obtain better work from a foreign labourer.[383] Pamphlets enjoined German women to avoid sexual relations with foreign workers as a danger to their blood.[384]
"It's utterly impossible for me to build my life on a foundation of chaos, suffering and death," she wrote on July 15, 1944. "I see the world being slowly transformed into a wilderness; I hear the approaching thunder that, one day, will destroy us too. I feel the suffering of millions. And yet, when I look up at the sky, I somehow feel that everything will change for the better, that this cruelty too shall end, that peace and tranquility will return once more."
It is not white supremacy that differentiates America from Nazi Germany, but rather the constitutional architecture of this country—a democratic system tested, broken, remade, rewritten. Racism in the United States is counterbalanced by an emancipatory spirit. The Constitution enshrined slavery, but this same Constitution was transformed as a result of the bloodiest war in U.S. history, which ended the Southern slave empire. The Civil War was a second American founding, and the passage of the Thirteenth, Fourteenth, and Fifteenth amendments advanced the American spirit of equality before the law. Even amid the racist terror that lasted long after the Civil War, African Americans made room in the United States to fight for their freedom, equality, and dignity. Nazi Germany, by contrast, was a totalitarian state, and its express objective was the erasure of the Jewish people. These differences cannot be minimized.
Hitler admired the British Empire and its colonial system as living proof of Germanic superiority over 'inferior' races and saw United Kingdom as Germany's natural ally.[59][60] He wrote in Mein Kampf: "For a long time to come there will be only two Powers in Europe with which it may be possible for Germany to conclude an alliance. These Powers are Great Britain and Italy."[60]
As a result of the Holocaust, the term "concentration camp" carries many of the connotations of "extermination camp" and is sometimes used synonymously. Because of these ominous connotations, the term "concentration camp", originally itself a euphemism, has been replaced by newer terms such as internment camp, resettlement camp, detention facility, etc., regardless of the actual circumstances of the camp, which can vary a great deal.