How did the Missouri Compromise and the compromise of 1850 contribute to differences between free and enslaved African Americans?

Cases were centered around a water pump.

Explanation:

Dr. John Snow was an English physician, considered one of the fathers of modern epidemiology. He is particularly well-known for having traced the source of a cholera outbreak in Soho, London, in 1854. Snow noticed that houses which were infected with cholera all surrounded a water pump. he concluded that the cholera virus must be transmitted through the water. His findings led to fundamental changes in the water and waste systems in London, and these were later adopted by many cities around the world.