What change did John Snow inspire in London?
Transport infrastructure
Schooling system
Water and waste systems
Public libraries
Answer
John Snow was a doctor who studied how diseases spread. He believed that cholera was spread through contaminated water, and he was able to prove this by tracing a cholera outbreak to a particular water pump. This discovery led to major changes in London's water and waste systems, which helped to reduce the spread of cholera and other diseases.
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