Describe the Holocaust as a documented historical atrocity, and evaluate the historical debate over the decision to use atomic weapons against Japan.
As Allied forces advanced into Germany in early 1945, soldiers uncovered direct physical evidence of the Holocaust: Nazi Germany's systematic, industrialized murder of six million European Jews, alongside millions of Roma people, disabled people, Soviet prisoners of war, political prisoners, and others the regime deemed unworthy of life. Soviet troops liberated the Auschwitz-Birkenau death camp in Poland in January 1945; American and British forces liberated camps including Buchenwald and Dachau in Germany that April, and General Eisenhower personally ordered extensive photography and documentation of what they found, reportedly saying he wanted a permanent, undeniable record because he anticipated future doubt. After the war, an international tribunal at Nuremberg (1945-46) prosecuted surviving Nazi leaders for crimes against humanity, establishing a legal principle -- that following orders is not a defense for participating in atrocity -- that still shapes international law today. This is history that must be taught plainly, as fact, not softened or treated as one perspective among several.
In the Pacific, Japan fought on after Germany's surrender despite clearly worsening odds, and American planners projected that a full invasion of the Japanese home islands (Operation Downfall) could cost hundreds of thousands to over a million combined casualties. President Truman authorized using the atomic bomb, a devastating new weapon developed in secret by the Manhattan Project, against the Japanese cities of Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945); the Soviet Union also declared war on Japan and invaded Manchuria on August 8. Japan announced its surrender on August 15 ("V-J Day"), formally signed September 2, 1945, ending World War II. Historians have debated the bomb's necessity ever since, and both sides deserve a fair hearing: supporters, including Truman himself, argued it ended the war quickly and likely saved more lives, American and Japanese, than a full invasion would have cost; critics, including some contemporary military leaders, have argued Japan was already close to surrender, that Soviet entry into the war may have been equally decisive, and that targeting civilian population centers directly raised its own serious moral questions -- a genuinely contested historical judgment this course leaves open rather than resolves for you.
Mastery looks like: They can describe the Holocaust's scale and the Nuremberg principle accurately and without hedging, and can state a genuine argument on each side of the atomic bomb debate without collapsing it into a single verdict.
Common stumbles: Either treating the Holocaust as arguable rather than documented fact, or, in the opposite direction, treating the atomic bomb decision as a simple, obvious call rather than a genuinely contested judgment historians still debate.