_____________ is (are)the key factor in explaining the decline in death rates in the U.S.in the late 19ᵗʰ and early 20ᵗʰ century.

Question

Quizplus · Accepted Answer

Improved sanitation was the key factor in explaining the decline in death rates in the U.S. in the late 19th and early 20th century. Advances in sanitation, such as improved water and sewage systems, were crucial in reducing deaths from diseases like cholera, typhoid, and tuberculosis. While improved medical treatments and a more varied and nutritious diet were also important factors, they were not as significant as improved sanitation. Urbanization played a role in the decline of death rates, but primarily because it led to improvements in sanitation.

_____________ Is (Are)the Key Factor in Explaining the Decline in Death