Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
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Shi Huangdi was unpopular was due to the deaths of thousands of laborers during the construction of The
Great Wall.
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Volga River, Russian Volga, ancient (Greek) Ra or (Tatar) Itil or Etil, river of Europe, the continent's longest, and the principal waterway of western Russia and the historic cradle of the Russian state.
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