What led to the drastic increase in the average human lifespan in developed nations?
Answer
The implementation of sanitation systems and clean water infrastructure.
The identification of invisible agents as the source of disease, known as germ theory, allowed for the development of public health systems. By establishing sanitation and clean water infrastructure, societies were able to prevent the spread of fatal diseases. This advancement has saved more lives annually than any individual pharmaceutical product, representing one of the most significant leaps in health and longevity in human history.
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