Key term for OCR GCSE History A, used in Germany 1925–1955.
The systematic state programme for the mass murder of the mentally and physically disabled, which evolved from gas chambers to 'wild euthanasia'.
Action T4 appears in OCR GCSE History A revision content for Non-British Depth Studies, especially Germany 1925–1955 and Nazi Germany and its People 1933–1939.
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