Respuesta :
The two most important new technologies that enabled the development of the skyscraper were the elevator and mass-produced steel.
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This is a mutipe choice question right
Answer
The Elevator and mass-produced steel
Explanation
The mass production of steel enabled the development of skycrapers because steel facilitated the design of reinforced concrete structures that a new technology in building sector.Different designs of elevators facilitated the movement of building materials over the heights and ensured safety of workers too.
