The steady progress of industry in the United States was possible because:. 1. new sources of energy allowed industry to develop 2. man's creative mind developed 3. methods to increase production improved 4. methods of transportation and communication were developed 5. all of the above

5. all of the above

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.

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

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