shyshy204 shyshy204
  • 23-02-2017
  • Social Studies
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how did new inventions make it possible for people to bulid skyscrapers

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AnimeBrainly
AnimeBrainly AnimeBrainly
  • 23-02-2017
Stronger steel, and other things including better plans, allowed towers to be built taller and taller, without crashing down, because of better techniques and everything is better and stronger
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