Question

what impact did Andrew carnegie and John D Rockefeller have on the american economy in the last 1800s

Answer 1

Both Andrew Carnegie and John D Rockefeller had a huge impact on the American economy in the late 1800s, since this invested huge sums of capital into massive building projects that employed thousands of workers, and provided vital infrastructure. 

Answer 2

Answer:

They established and dominated the new steel and oil industries.

Explanation:

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