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judoca24 judoca24
wrote...
Posts: 6635
6 years ago
Late nineteenth-century architects were able to design skyscrapers after engineers developed
 
  a. the Bessemer process of steel manufacture.
  b. reinforced concrete.
  c. steel girders shaped like the letter I.
  d. gasoline-powered cranes.
  e. elevators.
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wrote...
6 years ago
ANS: C
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