How did industrialization in the united states contribute to rapid change?

Industry revolution helps U.S. increace the economy etc. 
for example, most people get a job, (jobless people are decreasing)
people begin to use machine, the hand produce trun to machine produce.
social level increasing
industry revolution still influence us today.

not accurate, personal opinion, just give you some idea. :)

Iwould say the answer would be b