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The two most important new technologies that enabled the development of the skyscraper were O the telephone and the telegraph. O the elevator and mass-produced steel. O the type…

The two most important new technologies that enabled the development of the skyscraper were O the telephone and the telegraph. O the elevator and mass-produced steel. O the type…
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The two most important new technologies that enabled the development of the skyscraper were

O the telephone and the telegraph.
O the elevator and mass-produced steel.
O the typewriter and the telephone.
O the streetcar and mass-produced steel.

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User MacGucky
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2 Answers

5 votes

Answer:

B

Step-by-step explanation:

answered
User FlowRaja
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7.3k points
0 votes

Answer:

The elevator and mass-producing steel.

Step-by-step explanation:

answered
User Tsangares
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7.4k points
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