The population of the industrial world grew dramatically in the nineteenth century, in part because
A) improved transportation networks resulted in cheaper food and therefore better diets.
B) families did not yet know how to limit the number of births.
C) new urban centers were healthier environments than were rural villages.
D) aggressive public health programs eradicated childhood diseases.
E) All these answers are correct.
Ans: A) improved transportation networks resulted in cheaper food and therefore better diets.
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