<span>D. an unofficial competition between different departments of NASA to develop new space technology
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Answer: The valleys of the Tigris and Euphrates rivers were the site of the world's first civilizations. The rivers of Southwest Asia supported the growth of civilizations. New farming techniques led to the growth of cities.
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Explanation:
The answer is B: a larger urban population.
One statistic that has functioned steadily as an indicator of the level of industrialization and economic development in countries is the percentage of people living in urban areas, that is to say, people living in cities rather than on rural lands. It is a good indicator because this allows one to infer that the population of such a country is employed not in farming or fishing, but rather in industrial labor, the service industry or forms of human capital exploitation.
