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Which of the following technological developments was most responsible for a massive increase in

productivity during the Gilded Age?
Invention of the light bulb
Invention of the telephone
Expansion of the railroad system
Mass production of steel

1 Answer

4 votes

Answer:

I think it is B. Sorry if I am not correct...

Step-by-step explanation:

hope this helps!! :) :) :)

User Shamshiel
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