Answer:
Transition from an agricultural to an industrial economy
Step-by-step explanation:
The late 1800s in the United States was widely known as the period of Industrial Development. It was characterized by the advancement in technology, particularly new discovery and innovation. This led to large-scale production in the manufacturing and development of agricultural products, extensive mining, and industrial production at large amongst others.
Hence, in this case, the right answer is: In the late 1800s, advances in technology, new business models, and government policies contributed to the "transition from an agricultural to an industrial economy."