The correct answer to this open question is the following.
Political revolutions and the Industrial Revolution combine to promote change in that they served as the way people united to demand solutions to their difficult economic situation, get more civil rights and freedoms, and participated more in politics. The Industrial Revolution offered many people new jobs in the manufacturing plants. Although these were low paid jobs under unhealthy and risky conditions, they paid more than what farmers -for instance- earned in the rural fields of America-. Millions of people migrated from the southern parts of the country to the large cities of the North.
These political revolutions clashed when high expectations were not delivered and people lost the stamina that created the revolution in the first place.