Key term for OCR GCSE History B, used in Industrial and Imperial Britain c.1750–c.1900.
The scientific proof, established by Louis Pasteur in 1861, that microscopic bacteria are the true cause of disease.
Germ Theory appears in OCR GCSE History B revision content for Migrants to Britain (c.1250–Present), especially Industrial and Imperial Britain c.1750–c.1900 and Change overview.
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