Answer:
5. all of the above
Step-by-step explanation:
The steady progress of industry refers to the constant progression and enlargement of the different industries that exist in the United States of America. This was made possible because of many factors that allowed progression to take place and broke down the roadblocks that may otherwise have prevented it. Such factors include, new sources of energy allowed industry to develop, man's creative mind developed, methods to increase production improved, and even methods of transportation and communication were developed.