The trend towards densely populated urban centers begun in 1800's continued into the 1900's. Man's development of urban centers was a major step away from what seemed to be nature's way of living: on farms and sparsely placed homesteads. Industrial production required hundreds of thousands of workers and, especially in the second industrial revolution, scientists. The urban centers that emerged during this period, such as Paris, London, and Berlin, were quickly changing the ratios of population from rural to urban Berlin's population, for example, went from 66% rural in 1871 to almost 66% urban before the first World War (see "The Second Industrial Revolution").
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Cells make up the smallest level of a living organism such as yourself and other living things. The cellular level of an organism is where the metabolic processes occur that keep the organism alive. That is why the cell is called the fundamental unit of life.
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Answer: Government raised money by selling "Liberty Bonds." 1920 - The Government's debt shrunk from $23 billion to $17 billion. by selling the liberty bonds if that answers your question
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Mexico, Guatemala, El Salvador, and Belize, and the western sections of Honduras and Nicaragua, and northern Costa Rica.
The answer would be B) the Roman Empire, since they were the ones who established it, and the mongols came after the silk roads construction, alexander the great lived before the silk road, and many local governments also encompasses the romana
