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Twitchin Twitchin
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6 years ago
Which one of the following innovations enabled Romans to erect giant amphitheaters, public baths, and high-rise tenement buildings?
 
  A) steel
  B) copper
  C) calculus
  D) concrete
  E) load-bearing arches
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Dr.VistaDr.Vista
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6 years ago
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2 years ago
Thank you
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