Answer:
Industrial revolution
Step-by-step explanation:
In the 1800s the industrial revolution shifted jobs from farms to factory's. During the industrial revolution, entrepreneurs invented new machines to make production faster and cheaper.
Southern people opposed The American System because they already had rivers to transport goods and they did not want to pay for roads and canals that they did not even need.
Although, the northwest people benefited very much because of this.
Story Explanation
For example, lets pretend were back in time, its 1801 and you dislike the "American System" you sigh and look at the sky and look at how the sun slowly goes down "We dont need these roads, these canals, any of this stuff" you say to yourself. The next few days you tell people not to buy these things and you feel pretty good, and finally after a long day, you lay down, close your eyes, and get a goods night rest.
I hope this helped! If you dont understand something or would like more of an explanation, feel free to contact me!