Final answer:
Technological innovations, like the telephone, were a key factor in driving industrial growth during the Gilded Age in the United States.
Explanation:
One factor that led to increased industrial growth in the United States during the Gilded Age was technological innovations, such as the telephone.
Technological advancements like the telephone, pioneered by Alexander Graham Bell, revolutionized communication, allowing businesses to operate more efficiently and reach wider markets. This innovation, along with other technological advancements like Thomas Edison's work in electricity, played a significant role in fueling industrial growth during this period.
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