…showed first 75 words of 1006 total…

…showed last 75 words of 1006 total…by a lack of scientific knowledge that led to unsanitary conditions and practices. The upper class was usually not a victim of malnutrition, thus was generally healthier. It was not until the advances in science during the 19th century that the mortality rate was lowered, by vaccinations, and more advanced medical procedures. Will science and technology increase to the extent that 20th century heath care is viewed as primitive as that of the 18th century?