Answer:
Because of the fast pace that people were moving to cities, housing, sewage and social systems, and transportation were unable to keep up.
Explanation: disease were prevalent problems in all urban centers; city planners and inhabitants alike sought new solutions to the problems caused by rapid urban growth. Living conditions for most working-class urban dwellers were atrocious.
Answer:
The technological and industrial history of the United States describes the United States' ... One of the real impetuses for the United States entering the Industrial ... Around the turn of the 20th century, American industry had superseded its ... and successive technological advances like the railroad, telegraph & telephone,
Explanation:
The answer is: C
This is because the graph indicates the sharp decline of the rural population, due to in large part to the increase in urbanization and the ever-growing industrialization of the United States throughout the decades.
As such we can analyze that, as the years go by the population trends to move to urban areas in place of rural ones.
The world's population today is much larger than it has been in anytime in the history of the world, and has been continuing to grow ever since the Industrial Revolution, since this raised the living standards and increased in incomes of an enormous number of people, especially in the western world. Advances in medicine have also played a major role.