Answer:
C. the spread of disease.
Explanation:
Adequate water and sewage systems are characteristics of modern urban centers. They became part of standard urban planning and management only in the late 19th century and early 20th century. The lack of such systems means unsanitary conditions and high probabilities of disease spread. We can still see public health problems originated in inadequate sewage and water systems in many developing countries.
The answer is D- natural gas
Prior to the Industrial Revolution, "<span>A. artisan goods" </span>was the basis of most people's economic systems, since these goods were usually produced by hand, instead of being mass-produced, as during the Industrial Revolution.
Answer:
C) Nations build up their militaries out of fear, which only leads to more fear.
Explanation:
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Protect the right to freedom
