Answer :
Final answer:
The shift to an industrial economy during the Gilded Age in the US was driven by technological innovation, particularly railroads, and the growth of big businesses.
Explanation:
In the shift to an industrial economy during the Gilded Age in the US, two key factors were the advancements in technological innovation, such as the railroads, which facilitated the movement of goods and people across the country, and the growth of big business that led to the rise of massive corporations dominating various industries.
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