The main ideas that represent the Industrial Revolution in the US country are the transformation from a rural society to urban society and the movement of people from rural to urban areas in search of work.
Options B and D are the correct answers.
Industrial Revolution is the phase where agricultural production shifted to machinery production.
The Industrial Revolution completely transforms the rural society into an urban culture which is called urbanization. It also involves the people who were moved to cities from the rural areas as the job opportunities for the people have risen due to Industrial Revolution.
Therefore, the change from rural to urban culture and the shifting of people from rural to urban areas perfectly describe the main idea of the Industrial Revolution.
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