Skyscrapers
The "skyscraper" is a uniquely American invention that has come to symbolize the cultural and economic predominance of the United States in the twentieth century. With the in...
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Skyscrapers
Until one hundred years ago, the skylines of the world's cities were characterized by silhouettes of trees and church towers, but as urban populations have grown, urban land has become ext...
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Skyscrapers
Skyscrapers