In 1900, life expectancy for US whites was
.a. .almost 30 years.
.b. .almost 40 years.
.c. .almost 50 years.
.d. .almost 70 years.
.e. .over 80 years.
Question 2
The history of disease before the 1900s suggests that
.a. .cities are healthier places to live than rural areas.
.b. .long-distance travel increases public health by exposing doctors to new scientific ideas.
.c. .changes in medical technology play a large role in increasing average life expectancy.
.d. .changes in the knowledge base of folk healers play a large role in increasing average life expectancy.
.e. .changes in womens roles can play a large role in increasing average life expectancy.