Answer:
im pretty sure is C or turning the United States into a world economic power.
Explanation:
The most important result of the Second Industrial Revolution is option c turning the United States into a world economic power
Revolution is a change usually positive that lead to the evolution of manny happenings and development.
Industrial revolution led to the establishment of many big companies and opened up the door for international trade in the U.S. This led to a dramatic change in the economy as a result of trade and business opportunities flowing in.
Therefore, The most important result of the Second Industrial Revolution was turning the United States into a world economic power.
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