How did the explosive growth of industry, agriculture, and transportation change america?

The explosive growth of industry,agriculture and transportation changed America because it Caused separatism between north and south, created middle class, overcame challenge of distance and helped expand markets.

Explanation:

creation of transportation channels such as linking roads helped reduce the challenge of distance between production points and target markets. The creation of these roads brought about a creation of new markets. This also benefited the industries as their products could easily be transported to the needed areas.

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.