The Nazis established killing centers for efficient mass murder. Killing centers were almost exclusively “death factories.” They are also referred to as “extermination camps” or “death camps.” Nazi concentration camps, by contrast, served primarily as detention and labor centers. At the killing centers, Nazi officials employed assembly-line methods to murder Jews and other victims. German SS (Schutzstaffel; Protection Squadrons) and police murdered nearly 2,700,000 Jews in the killing centers by asphyxiation with poisonous gas or by shooting.
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American neutrality
The president insisted that all government actions be neutral, and that the belligerents must respect that neutrality according to the norms of international law.
The Americans helped the British Empire, French and Portuguese forces defeat and turn back the powerful final German offensive, also the Americans played a role in the Allied final offensive
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C.) the purchase ended up being very unpopular with americans
Gerald Ford both times it happened in California